Grassland dynamics : an ecosystem simulation model / John H.M. Thornley. Thornley, J. H. M. Grassland ecology Computer simulation. QH87.7 .T48 1998 577.40113 21 THG Includes bibliographical references and index. Wallingford, UK ; New York : CAB International, c1998. c1998. 1998 Text xii, 241 p. ; eng