00341nam a2200121 a 450000500170000002000150001708200200003210000230005224500790007525000110015426000340016530000200019920251203092008.0 a0803942192 a300.72,bD, mil aMiller, Delbert C. aHandbook of research design and social measurement, delbert C. Miller, eng a5th ed aLoNew Delhion, Sage, GBc1991 axiv,703p.c22cm