00300nam a2200109Ia 450000500170000000800410001708200150005810000170007324500440009026000480013430000080018220260224041010.0260224s9999||||xx |||||||||||||| ||und||  a301.35 YOU  aYoung, P.V.  0aScientific social surveys and research:  aEnglewood Cliffs, N.J., Prentice-Hallc1988  a576