00346nam a2200109 a 450000500170000008200200001710000180003724500980005526000440015330000180019763000210021520251202164237.0 a330.973032bENC aPorter, Glenn aEncyclopedia of American economic history Vol 2bstudies of the principal movements and ideas aNew YorkbCharles Scribner's Sonsc1984 a893 p.b24 cm aEconomic history