00351nam a2200133Ia 4500008004100000020001800041082001900059245004000078245002100118260003000139260000900169300001500178526002400193250428s9999    xx            000 0 und d  a0-395-20134-9  a304.2 Os9 1976 0aWindows on our world : planet earth 0cOswald, James M.  bHoughton Mifflin Company.  c1976  a352 pages.  a300 Social Sciences