00350nam a2200133 a 450000500170000008200130001710000250003024500210005525000120007626000440008830000280013249000420016063000140020220251203091418.0  a330bGRO  aGrossman, Gregoryd_  aEconomic systems  a2nd ed.  aNew DelhibPrentice Hall of Indiac1978  axii, 195 p.c22 cm.bPB  aFoundation of modern economics series  aEconomics