Parel, C.P. Sampling design and procedures / C.P. Parel, G.C. Caldito, P.L. Ferrer [et al] - New York: ADC US, 1973 - 53p. ill. 22 cm. - Papers on survey methodology series . Includes bibliographical references and index. Subjects--Topical Terms: Sampling Dewey Class. No.: 311.21 / PAR