TY - BOOK ED - Special Programme of Research, Development and Research Training in Human Reproduction TI - Challenges in reproductive health research: bienal report, 1992-1993 SN - 92-4-156170-X U1 - 363.96 PY - 1994/// CY - Ginebra, Sui. PB - WHO KW - Anticoncepción KW - Planificación Familiar KW - Reproducción ER -