TY  - BOOK
AU  - Pryor,Edmund J
TI  - Ecomic for the mineral engineer
U1  - 658.922 
PY  - 1958///
CY  - London
PB  - Pergamon Press
KW  - Engineering
KW  - Management
KW  - plant engineering
KW  - Mines and mineral industry
N1  - Includes index
ER  -