00401nam a22001097a 4500020000900000082001300009100003400022245007100056260003400127300003300161650009700194  a(hb)  a618bDEW  aCharles R. Whitfield (editor)  aDewhurst's textbook of obstetrics and gynecology for postgraduate   aUSAbBlackwell Science c1995  aix, 814 p.b: ill.c; 27 cm.  aGynecology aObstetrics vNormal pregnancy vNormal pregnancy vAmenorrhoea vVirilism vPRH