TY  - BOOK
AU  - Vinok Kumar
AU  - University of Delhi. Faculty of Management. Deptt of Economics (Delhi India)
ED  - University of Delhi. Faculty of Management. Deptt of Economics (Delhi India)
TI  - "Productivity, returns to scale and technological c"
U1  - "X 9(D66):2.2.N7, M1" 
PY  - 1981///
CY  - Delhi
PB  - University of Delhi India    
KW  - Electrical
ER  -