TY - BOOK ED - Department of Economic and Social Affairs TI - Levels and trends of contraceptive use as assessed in 2002 SN - 92-1-151399-5 PY - 2004/// CY - New York PB - United Nations KW - Sociology N1 - United Nations Publication Sales No. E.04.XIII.9; ST/ESA/SER.A/239 ER -