Christen et al., 1990. J. Anim. Sci., 68: 3350-3359

Christen, A. M. ; Seoane, J. R. ; Leroux, G. D., 1990. The nutritive value for sheep of quackgrass and timothy hays harvested at two stages of growth. J. Anim. Sci., 68: 3350-3359