00485nam a22001097a 4500020002300000082001500023100004200038245004700080260003000127300003400157650018400191  a9780470654590 (hb)  a618.4bCOH  aCohen, Wayne R.aFriedman, Emanuel A.  aLabor and delivery careba practical guide  aUKbWiley-Blackwellc2011  axii, 388 p.b: ill.c; 25 cm.  aLabor, obstetricsaBirth injuries-Prevention & controlvNormal laborvDysfunctional laborvCanal traumavCesarean deliveryvDelivering twinsvVacuum extractorvObstetric casevPRH