Radio and television spot announcements for family planning worldwide / Bonnie Remsberg ; Jane Trowbridge and George Daffin. Trowbridge, Jane jt. at. Remsberg, Bonnie Daffin, George jt. at. Population 301.426 RER Includes bibliographical references and index. Chicago : University of Chicago, 1975. 1975. 1975 Text x, 151 p. : eng