TY  - BOOK
TI  - Determinants of costs and productivitiy in coal mi
T2  - University of Delhi, Economics (Deptt. of-), Dissertation. Dissertation, University of Delhi, Economics (Deptt of-
PY  - 1983///
CY  - Delhi
PB  - University of Delhi        
KW  -  COAL
KW  - INDUSTRIAL ECONOMICS
ER  -