00332nam a2200121Ia 4500008004100000040001600041041001200057082001600069100001900085245006400104260002700168300001500195230917s9999||||xx |||||||||||||| ||und||  e65529aMAIN  aEnglish  a301.018 O8I  aOlson, Sheldon 0aIdeas and data: the process and practice of social research  aHomewoodbDorseyc1976  axv, 513 p.