Precalving body size and pelvic area relationships in Hereford heifers.
D000818:Animals; D001835:Body Weight; D002417:Cattle; D002418:Cattle Diseases; D004420:Dystocia / Q000662:veterinary*; D005260:Female; D010387:Pelvimetry / Q000662:veterinary; D010388:Pelvis / Q000033:anatomy & histology*; D011247:Pregnancy; D011270:Pregnancy, Animal