00257nam a2200097 a 450000500170000008200170001710000240003424500400005826000350009830000260013320251203091602.0  a509,bD, ged  aGedam, Ratnakar, M.  aEconomics of Science and Technology  aDelhibAshish Pub. Housec1990  axii, 280p.c22 cm. HB