00265nam a2200097 a 450000500170000008200190001710000270003624500530006326000290011630000220014520251203090505.0  a573.2,bD, har  aHart, Robert A., de J.  aEcosociety: a historical study of Ecological man  aDehara DunbNatrajc1984  axii, 196p, 22 cm.