Pearson, C J Agronomy of grassland systems / C.J. Pearson and R.L. Ison. - Cambridge [Cambridgeshire] : Cambridge University Press, c1987. - iv, 169 p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 0521310091 (pbk.) Subjects--Topical Terms: Pastures.Grasses.Range management. LC Class. No.: SB199 / .P42 1987 Dewey Class. No.: 633.2