Authors: Johnson, Q Veith, W

Citation: Q. Johnson et W. Veith, Effect of dietary plant and animal protein intake on sperm quality in monkeys, ARCH ANDROL, 46(2), 2001, pp. 145-151

Authors: Brand, TS Johnson, Q Franck, F Veith, W Conradie, R Hough, FS

Citation: Ts. Brand et al., The influence of dietary crude protein intake on bone and mineral metabolism in sheep, J SA VET AS, 70(1), 1999, pp. 9-13