00438nam a2200181Ia 4500001001100000005001700011008003500028020001400063041000800077050002100085090000800106245002300114260003000137300001700167650001400184650004300198999001500241000001462220251012174532.0  901126s1973    xxx           000  a3331424700 aeng00aHB171bH377 197304a33010aEconomic dynamics   aLondonbMacmillanc1973.   a195p.c22cm. 0aEconomics 0aStatics and dynamics (Social sciences)  c5577d5577