TY  - BOOK
AU  - Ray,Subhash C.
AU  - Sinha, Indra N.
TI  -  Mine and mineral economics
SN  - 9788120351745
U1  - 338.2 
PY  - 2016///
CY  - Delhi
PB  - PHI Learning
N1  - Includes bibliographical references and index
ER  -