00306nam a2200121Ia 4500082002100000100004100021245004800062250001000110260003800120300001600158500000500174700000500179  aSC:330.973bUn58  aUnited State. Department of Commerce  aStatistical abstract of the United Statesb  a88th.  bU.S. Department of Commercec1967  axii, 1050p.  a  a