TY  - BOOK
AU  - Douglas, Hugh
TI  - The hand book of mineral economics
SN  - 0961165006
U1  - 553.1 
PY  - 1983///
CY  - London
PB  - Hugh Douglas
KW  - Mineral industries 	
KW  -  Mines and mineral resources
N1  - One copy price is USD 22 1 USD = 160.92 LKR on the date of 18/06/2018
ER  -