Zaidan, George C The costs and benefits of family planning programs / George C. Zaidan - Baltimore : Distributed by the Johns Hopkins Press, 1971 - x, 52 p. ; 23 cm. - World Bank staff occasional papers ; no.12 . Bibliography: p. 50-52. ISBN: 0801813174 LCCN: 70-155166 Subjects--Topical Terms: Birth control--Cost effectiveness