TY - BOOK ED - United Nations. Department of International Economic and Social Affa irs. TI - The impact of population structure on crude fertility measures: a comparative analysis of world fertility survey results for twenty-one developing countries U1 - 304.6 IMP PY - 1982/// CY - New York PB - United Nations, Dept. of International Economic and So cial Affairs KW - Fertility, Human KW - Developing countries KW - Population N1 - "ST/ESA/SER.R/49."; Includes bibliographical references ER -