00310nam a2200109Ia 4500008004100000040001100041100001600052245005600068260005400124300001300178300000900191251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aS.M. Lipset 0aProceedings of The National Academy Of Sciences USa  c1977bThe National Academy Of ScienceaWashington  aP.1-1602  bV.74