Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Four-engined_tractor_aircraft> . }
- Aero_Spacelines_Mini_Guppy subject Category:Four-engined_tractor_aircraft.
- Aero_Spacelines_Pregnant_Guppy subject Category:Four-engined_tractor_aircraft.
- Aero_Spacelines_Super_Guppy subject Category:Four-engined_tractor_aircraft.
- Ahrens_AR_404 subject Category:Four-engined_tractor_aircraft.
- Airbus_A400M_Atlas subject Category:Four-engined_tractor_aircraft.
- Airspeed_Fleet_Shadower subject Category:Four-engined_tractor_aircraft.
- Antonov_An-10 subject Category:Four-engined_tractor_aircraft.
- Antonov_An-12 subject Category:Four-engined_tractor_aircraft.
- Antonov_An-22 subject Category:Four-engined_tractor_aircraft.
- Antonov_An-70 subject Category:Four-engined_tractor_aircraft.
- Atka_B-24D_Liberator subject Category:Four-engined_tractor_aircraft.
- Aviation_Traders_Carvair subject Category:Four-engined_tractor_aircraft.
- Avro_Lancaster subject Category:Four-engined_tractor_aircraft.
- Avro_Lincoln subject Category:Four-engined_tractor_aircraft.
- Bell_X-22 subject Category:Four-engined_tractor_aircraft.
- Bird_Innovator subject Category:Four-engined_tractor_aircraft.
- Blackburn_Beverley subject Category:Four-engined_tractor_aircraft.
- Bloch_MB.162 subject Category:Four-engined_tractor_aircraft.
- Blohm_&_Voss_Ha_139 subject Category:Four-engined_tractor_aircraft.
- Blériot_155 subject Category:Four-engined_tractor_aircraft.
- Boeing_307_Stratoliner subject Category:Four-engined_tractor_aircraft.
- Boeing_314 subject Category:Four-engined_tractor_aircraft.
- Boeing_377_Stratocruiser subject Category:Four-engined_tractor_aircraft.
- Boeing_B-17_Flying_Fortress subject Category:Four-engined_tractor_aircraft.
- Boeing_B-29_Superfortress subject Category:Four-engined_tractor_aircraft.
- Boeing_B-50_Superfortress subject Category:Four-engined_tractor_aircraft.
- Boeing_B-54 subject Category:Four-engined_tractor_aircraft.
- Boeing_C-108_Flying_Fortress subject Category:Four-engined_tractor_aircraft.
- Boeing_C-97_Stratofreighter subject Category:Four-engined_tractor_aircraft.
- Boeing_KB-29_Superfortress subject Category:Four-engined_tractor_aircraft.
- Boeing_KC-97_Stratotanker subject Category:Four-engined_tractor_aircraft.
- Boeing_Pelican subject Category:Four-engined_tractor_aircraft.
- Boeing_XB-15 subject Category:Four-engined_tractor_aircraft.
- Boeing_XB-38_Flying_Fortress subject Category:Four-engined_tractor_aircraft.
- Boeing_XB-39_Superfortress subject Category:Four-engined_tractor_aircraft.
- Boeing_XB-55 subject Category:Four-engined_tractor_aircraft.
- Boeing_Y1B-20 subject Category:Four-engined_tractor_aircraft.
- Boeing_YB-40_Flying_Fortress subject Category:Four-engined_tractor_aircraft.
- Breguet_730 subject Category:Four-engined_tractor_aircraft.
- Breguet_941 subject Category:Four-engined_tractor_aircraft.
- Breguet_Deux-Ponts subject Category:Four-engined_tractor_aircraft.
- Bristol_Britannia subject Category:Four-engined_tractor_aircraft.
- CANT_Z.511 subject Category:Four-engined_tractor_aircraft.
- Canadair_CL-44 subject Category:Four-engined_tractor_aircraft.
- Canadair_CP-107_Argus subject Category:Four-engined_tractor_aircraft.
- Canadair_North_Star subject Category:Four-engined_tractor_aircraft.
- Cessna_620 subject Category:Four-engined_tractor_aircraft.
- Conroy_Skymonster subject Category:Four-engined_tractor_aircraft.
- Consolidated_B-24_Liberator subject Category:Four-engined_tractor_aircraft.
- Consolidated_B-32_Dominator subject Category:Four-engined_tractor_aircraft.
- Consolidated_C-87_Liberator_Express subject Category:Four-engined_tractor_aircraft.
- Consolidated_PB2Y_Coronado subject Category:Four-engined_tractor_aircraft.
- Consolidated_PB4Y-2_Privateer subject Category:Four-engined_tractor_aircraft.
- Consolidated_R2Y subject Category:Four-engined_tractor_aircraft.
- Consolidated_XB-41_Liberator subject Category:Four-engined_tractor_aircraft.
- Consolidated_XPB3Y subject Category:Four-engined_tractor_aircraft.
- Convair_R3Y_Tradewind subject Category:Four-engined_tractor_aircraft.
- Curtiss_Wanamaker_Triplane subject Category:Four-engined_tractor_aircraft.
- De_Havilland_Albatross subject Category:Four-engined_tractor_aircraft.
- De_Havilland_Heron subject Category:Four-engined_tractor_aircraft.
- Dornier_Do_19 subject Category:Four-engined_tractor_aircraft.
- Douglas_C-132 subject Category:Four-engined_tractor_aircraft.
- Douglas_C-54_Skymaster subject Category:Four-engined_tractor_aircraft.
- Douglas_C-74_Globemaster subject Category:Four-engined_tractor_aircraft.
- Douglas_DC-4 subject Category:Four-engined_tractor_aircraft.
- Douglas_DC-4E subject Category:Four-engined_tractor_aircraft.
- Douglas_DC-6 subject Category:Four-engined_tractor_aircraft.
- Douglas_DC-7 subject Category:Four-engined_tractor_aircraft.
- Douglas_XB-31 subject Category:Four-engined_tractor_aircraft.
- Fairey_FC1 subject Category:Four-engined_tractor_aircraft.
- Focke-Wulf_Fw_200_Condor subject Category:Four-engined_tractor_aircraft.
- Focke-Wulf_Fw_300 subject Category:Four-engined_tractor_aircraft.
- Friedrichshafen_FF.60 subject Category:Four-engined_tractor_aircraft.
- General_Aircraft_Fleet_Shadower subject Category:Four-engined_tractor_aircraft.
- Handley_Page_Halifax subject Category:Four-engined_tractor_aircraft.
- Harbin_SH-5 subject Category:Four-engined_tractor_aircraft.
- Ilyushin_Il-18 subject Category:Four-engined_tractor_aircraft.
- Ilyushin_Il-18_(1946) subject Category:Four-engined_tractor_aircraft.
- Ilyushin_Il-38 subject Category:Four-engined_tractor_aircraft.
- Junkers_Ju_89 subject Category:Four-engined_tractor_aircraft.
- KJ-1_AEWC subject Category:Four-engined_tractor_aircraft.
- Kawanishi_H6K subject Category:Four-engined_tractor_aircraft.
- Kawanishi_H8K subject Category:Four-engined_tractor_aircraft.
- LTV_XC-142 subject Category:Four-engined_tractor_aircraft.
- Latécoère_611 subject Category:Four-engined_tractor_aircraft.
- Lioré_et_Olivier_LeO_H-246 subject Category:Four-engined_tractor_aircraft.
- Lockheed_AC-130 subject Category:Four-engined_tractor_aircraft.
- Lockheed_AP-3C_Orion subject Category:Four-engined_tractor_aircraft.
- Lockheed_C-121_Constellation subject Category:Four-engined_tractor_aircraft.
- Lockheed_C-130_Hercules subject Category:Four-engined_tractor_aircraft.
- Lockheed_C-69_Constellation subject Category:Four-engined_tractor_aircraft.
- Lockheed_CP-140_Aurora subject Category:Four-engined_tractor_aircraft.
- Lockheed_Constellation subject Category:Four-engined_tractor_aircraft.
- Lockheed_DC-130 subject Category:Four-engined_tractor_aircraft.
- Lockheed_EC-121_Warning_Star subject Category:Four-engined_tractor_aircraft.
- Lockheed_EC-130 subject Category:Four-engined_tractor_aircraft.
- Lockheed_EC-130H_Compass_Call subject Category:Four-engined_tractor_aircraft.
- Lockheed_EP-3 subject Category:Four-engined_tractor_aircraft.
- Lockheed_HC-130 subject Category:Four-engined_tractor_aircraft.
- Lockheed_L-049_Constellation subject Category:Four-engined_tractor_aircraft.