Unger, Irwin These United State : the questions of our past / Irwin Unger - Segunda edición - Boston : Little, Brown, 1982 - 2 volúmenes v.1 to 1877 - v.2 Since 1865 ISBN: 0316887625 (v.1) 0316887633 (v.2) Subjects--Topical Terms: Estados Unidos ---Historia Dewey Class. No.: 973 U57t 1982