Blalock, Hubert M. Methodology in social research, edited by Hubert M. Blalock, Jr. [and] Ann B. Blalock. - New York, McGraw-Hill [c1968] - 493 p. illus. 23 cm. - McGraw-Hill series in sociology . Subjects--Topical Terms: Social sciences--Research.Social sciences--Methodology. Dewey Class. No.: 307.2 / BLA N68M