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- 89600048 contributor B6034916.
- 89600048 created "1989.".
- 89600048 date "1989".
- 89600048 date "1989.".
- 89600048 dateCopyrighted "1989.".
- 89600048 description "Bibliography: p. 15.".
- 89600048 extent "15 p. :".
- 89600048 isPartOf "Information circular (United States. Bureau of Mines) ; 9227.".
- 89600048 isPartOf "Information circular ; 9227".
- 89600048 issued "1989".
- 89600048 issued "1989.".
- 89600048 language "eng".
- 89600048 publisher "Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines,".
- 89600048 subject "622 s 622/.334 19".
- 89600048 subject "Coal-mining machinery Data processing Research.".
- 89600048 subject "Coal-mining machinery Data processing.".
- 89600048 subject "Robots, Industrial Research.".
- 89600048 subject "Robots, Industrial.".
- 89600048 subject "TN295 .U4 no. 9227 TN813".
- 89600048 title "Computer-assisted continuous coal mining system-research program overview / by George H. Schnakenberg, Jr.".
- 89600048 type "text".