by Elbehri, A., Yonkers, R.D., Ford, S.A., Gripp, S.I.
Published in Journal of dairy science (01.05.1994)

by Gripp, S.I
Published in A. E. and R. S. (USA) (1995)

by Gripp, S.I
Published in A. E. and R. S. (USA) (1993)

by Gripp, Sharon I., Ford, Stephen A.
Published in Agricultural and resource economics review (01.10.1997)

by Gripp, S.I, Ford, S.A
Published in A.E. and R.S. (USA) (1994)

by Ford, S.A. (The Pennsylvania State University.), Gripp, S.I
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.04.1995)