00298    a2200109   4500020001500000082001900015100002400034245005400058260003400112300002000146650002200166  a0851992277  a577.40113bTHO  aThornley, John H.M.  aGrassland dynamicsban ecosystem simulation model  aWallingfordbCABIc1998g1998  axii,241p.c25cm  aGrassland ecology