Nelsen, Terry C.2015-05-122015-05-121976https://scholarworks.montana.edu/handle/1/5804enHereford cattleAberdeen-Angus cattleAnimal breedingGeneticsTime trends, sex and age of dam correction factors, and genetic parameters for production traits in Angus and Hereford cattleThesisCopyright 1976 by Terry C. Nelsen