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1book bibliotecaUNESCO
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2Handbook of research design & social measurement / Handbook of research design & social measurement /Texto bibliotecaCOLPOS
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3by Miller, Delbert C., 1913-1998 (Miller, Delbert Charles) 71550, Form, William H., 1917-2015 (Form, William Humbert) 71551
Published 1969Texto bibliotecaUNCO AR