Description based on: 1984 & 1985.
Microfiche. <1984 & 1985-> Washington, D.C. : Supt. of Docs., U.S. G.P.O. microfiches : negative.
Prepared by: Office of Planning and Evaluation, National Institute of Child Health and Human Development, in cooperation with: Center for Population Research, for: Interagency Committee on Population Research.