Porter Cedric, W. Oral contraceptives a guide for programs and clinics Cedric W. Porter, Jr., Hugh R. Holtrop, and Ronald S. Waife. - Chestnut Hill, Mass. Pathfinder Fund c1975. - 42 p. ill. - Pathfinder's monograph series ; 3 . Bibliography: p. 35-42. LCCN: 76360626 Subjects--Topical Terms: Oral contraceptives. LC Class. No.: RG137.5 / .P67 Dewey Class. No.: 613.9/432