00344nam a2200109Ia 4500008004100000082002000041100001800061245005500079260004500134300001000179490004500189250225b        |||||||| |||| 00| 0 eng d  a519.52bC767.SI  aConway, Freda  aSampling; an introduction for social scientistsb/  aLondon:bGeorge Allen & Unwin Ltd,c1967  a154p.  aMinerva series of students handbooksv18