00281nam a2200097Ia 4500008004100000082002100041100001900062245004900081260003700130300001600167251030b        |||||||| |||| 00| 0 eng d  a300.182bC678.SM  aCohen, Lillian  aStatistical methods for social scientistsb/  aNew Delhi:bPrentice-Hall,c1963  aviii, 181p.