TY - BOOK AU - GUPTA N C TI - Productivity, investment and import substitution i T2 - University of Delhi, Economics (Deptt. of-), Thesis. Thesis, University of Delhi, Economics (Deptt. of- U1 - X9(F195):546.2.N7, M1/Th PY - 1981/// CY - Delhi PB - University of Delhi KW - Non-metal KW - Industrial Econommics ER -