00369nam a2200145Ia 4500008004100000082001800041100002200059245001600081260004100097300000800138650002000146650001400166653002500180653001800205170901s1972    xx            000 0 und d  a301.431bA21G  aAdelman, Clifford 0aGenerations  aNew YorkbPraeger Publicationsc1972  a321  aSocial sciences  aSociology  aHistorical sociology  aSocial change