TY  - BOOK
AU  - Arora Preeti
AU  - University of Delhi. Deptt of Economic
ED  - University of Delhi. Deptt of Economic
TI  - Productivity and research and development :  A stud
U1  - "X9:2.2.N8, M7" 
PY  - 1987///
CY  - Delhi
PB  - University of Delhi India    
KW  - Production
ER  -