Walters, A. A. An introduction to econometrics / [by] A. A. Walters. - London : Macmillan; 1968. - 377 p. illus. 23 cm. Bibliography: p. [370]-374. Nat. Bib. No.: B68-21042 Subjects--Topical Terms: Econometrics.Economics . Dewey Class. No.: 330.072 / WAI 1970