00589nam a2200181Ia 4500020001500000082002300015100003700038245008500075260004800160300001300208500000500221690000600226700003000232952010400262964001700366921000900383999001500392  a0521084091  a338.6042bSh548.SM  aShepherd, J. F. and Walton G. M.  aShipping maritime trade and the economic development of colomial North Americab  aCambridgebCambridge University Pressc1972  ax, 255p.  a  a   aWalton, G. M. ; jt. auth.  00104070aISIbISId1998-08-21l0o338.6042 Sh548.SMpDP6909r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a5524  c5524d5524