000 00297nam a2200109Ia 4500
100 _aW.H.O. Tech Report services no.753
942 _cBK
245 _aMechanism of action, safety and efficacy of intrauterine devices
260 _aW.H.O., Geneva
_c1987
082 _a614.9435 W.H.O/TRS
300 _a91
999 _c60464
_d60464