Duncan, Otis Dudley. Introduction to structural equation models / Otis Dudley Duncan - New York : Academic Press, 1975 - ix, 180 p. : ill. ; 24 cm. - Studies in population . - Studies in population . Includes indexes Bibliography: p. 169-173 ISBN: 0122241509 Subjects--Topical Terms: Sociology--Statistical methodsSociology--Mathematical models