Pearson, C. J. Agronomy of grassland systems / C.J. Pearson, R.L. Ison. - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1987. ISBN: 0521324483 0521310091 (pbk.) Subjects--Topical Terms: Pastures.Grasses.Range management. LC Class. No.: SB199 / .P37 1987 Dewey Class. No.: 633.2�19