TY - GEN AU - Curtis, S L ; Blanc, A.K. TI - Determinants of contraceptive failure, switching, and discontinuation : an analysis of DHS contraceptive histories T2 - (Demographic and health surveys : analytical reports ; no. 6) PY - 1997/// CY - Calverton, MD : PB - Macro International Inc. KW - Contraceptive agents ER -