00518nam a2200181Ia 4500020001500000082002100015100002300036245005600059260004000115300002100155500000500176690000600181700000500187952010300192964001700295921000900312999001500321  a0914700030  a338.542bM398.EC  aMass, Nathaniel J.  aEconomic cycles; an anaysis of under lying causesb  aCambridgebWright Allen Pressc1975  axii, 185p. Index  a  a   a  00104070aISIbISId1998-08-21l0o338.542 M398.ECpDP16313r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a5418  c5418d5418