TY  - BOOK
AU  - Given,Ivan A.
TI  - Mechanical Loading Of Coal Underground
U1  - 622.6 22
PY  - 1943///
CY  - New York
PB  - McGraw-Hill Book Company, Inc.
KW  -  Coal mines and mining
KW  - Conveying machinery
N1  - Includes indexs (p.: 393 - 397 )
ER  -