TY  - BOOK
AU  - Bulman,H.F.
AU  - Redmayne,R.A.S.
TI  - Colliery working and management
U1  -  622.33 
PY  - 1951///
CY  - London
PB  - Technical Press
KW  - Coal mines and mining
KW  - Great Britain
KW  - Coal-miners
ER  -