TY - BOOK AU - Pearson,C.J. AU - Ison,R.L. TI - Agronomy of grassland systems SN - 0521324483 AV - SB199 .P37 1987 U1 - 633.2 19 PY - 1987/// CY - New York PB - Cambridge University Press KW - Pastures KW - Grasses KW - Range management N1 - Includes bibliographical references and index ER -