00430nam a2200109Ia 4500008004100000040003800041100001900079245015400098260003500252300001800287653001500305211228s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aUnited Nations 0aDeterminants and consequances of population trends: v. i :new summary of population trends on interaction of demographic, economic and social factors  bUnited NationsaNew Yorkc1973  axvi, 661p. p.  aDemography