00261nam a2200109 a 450000500170000002000150001708200170003210000210004924500260007026000330009630000220012920251203091611.0  a0071001964  a300.72,bbak  aBaker, Therese,L  aDoing social research  aNew York: Mc-Graw-Hillc1988  axxvi, 483p.c23cm