Bogue, Donald J. Techniques of pregnancy history analysis / Donald J. Bogue & Elizabeth J. Bogue - US : Chicago University , 1970 - v, 156p. : ill. ; 23 cm. - Family planning research and evaluation manual . Includes bibliographical references and index. Subjects--Topical Terms: PregnancyFertility Dewey Class. No.: 312.1 / BOG