Authors: Helzner, JF

Citation: Jf. Helzner, Let every child be wanted: How social marketing is revolutionizing contraceptive use around the world, STUD FAM PL, 31(4), 2000, pp. 346-348

Authors: Newman, K Helzner, JF

Citation: K. Newman et Jf. Helzner, IPPF charter on sexual and reproductive rights, J WOMEN H G, 8(4), 1999, pp. 459-463