00607nam a2200169Ia 4500082002100000100001600021245019000037260003500227300001700262500000500279690000600284700000500290952010100295964001700396921000900413999001500422  a338.012bB724.EC  aBoon, G. K.  aEconomic choice of human and physical factors in production; an attempt to measure the micro-economic and macro-economic possibilities of variation in factor proportions of productionb  aAmsterdambNorth-Hollandc1964  axviii, 332p.  a  a   a  00104070aISIbISId1998-09-09l0o338.012 B724.ECpDP327r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a9834  c9834d9834