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- catalog contributor b3905545.
- catalog created "1992.".
- catalog date "1992".
- catalog date "1992.".
- catalog dateCopyrighted "1992.".
- catalog description "Includes bibliographical references (p. 14).".
- catalog extent "14 p. :".
- catalog isPartOf "Information circular (United States. Bureau of Mines) ; 9320.".
- catalog isPartOf "Information circular ; 9320".
- catalog issued "1992".
- catalog issued "1992.".
- catalog language "eng".
- catalog publisher "Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines,".
- catalog subject "622 S 622/.28 20".
- catalog subject "Longwall mining.".
- catalog subject "Mine roof control.".
- catalog subject "TN295 .U4 no. 9320 TN288".
- catalog title "Examination of design and operation practices for longwall shields / by Thomas M. Barczak.".
- catalog type "text".