006830000a22002170004500003000900000005001700009562001700026100001500043700001800058710007600076245010300152264004000255300001100295041000800306490004800314650002700362650002000389650003500409651001000444040001100454PH-MaWHO20241108112532.0  aST/ESCAP/6481 aZhao, Xuan  aQiao, Xinjian  aUnited Nations Economic and Social Commission for Asia and the Pacific.  aKnowledge and attitudes of grassroots family planning workers about contraceptive methods : China.  aNew York : bUnited Nations,c1988.  aA-31p.  aeng  aAsian population studies series ; no.86-A).  aContraceptionxMethods  aFamily planning  aKnowledge, attitudes, practice  aChina  aWHOLIS