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Author Title Year Publication (down) Serial Volume Pages
Houpt, T.R.; Houpt, K.A. Nitrogen conservation by ponies fed a low -protein ration 1971 American journal of veterinary research 62 32 579-588
Keiper, R.; Houpt, K. Reproduction in feral horses: an eight-year study 1984 American journal of veterinary research 665 45 991-995
Boyd, L.; Houpt, K..A. Przewalski's Horse. The History and Biology of an Endangered Species 1994 971 313