00277nam a2200097Ia 4500008004100000040003800041100001700079245003800096260002900134653001600163211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBarclay, G W 0aTechniques of population analysis  bJOHN WIELY AND SONS, INC  aMATHEMATICS