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- a41004352 contributor B12841936.
- a41004352 created "1937.".
- a41004352 date "1937".
- a41004352 date "1937.".
- a41004352 dateCopyrighted "1937.".
- a41004352 description "Bibliographical foot-notes.".
- a41004352 extent "xv, 48 p.".
- a41004352 isPartOf "National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques. Studies of changing techniques and employment in agriculture. [Report no. A-1]".
- a41004352 issued "1937".
- a41004352 issued "1937.".
- a41004352 language "eng".
- a41004352 publisher "Philadelphia, Pa.,".
- a41004352 spatial "United States".
- a41004352 spatial "United States.".
- a41004352 subject "Agricultural laborers United States".
- a41004352 subject "Farm mechanization United States".
- a41004352 subject "S441 .N3 no. A-1".
- a41004352 subject "Sugar beet United States.".
- a41004352 title "Changes in technology and labor requirements in crop production: sugar beets by Loring K. Macy, Lloyd E. Arnold, Eugene G. McKibben and Edmund J. Stone.".
- a41004352 type "text".