TY - BOOK AU - Humphreys, L. R TI - The evolving science of grassland improvement SN - 9780521038737 SN - 96009419 U1 - 633.202 HUM PY - 1997/// CY - Cambridge PB - Cambridge University Press KW - Forage plants KW - Grassland ecology KW - Grasslands KW - Pasture ecology KW - Pastures N1 - Includes bibliographical references (p. 210-256) and index ER -