004420000a22001330004500020001800000060000800018082002400026100002200050245006500072260004000137260000900177300000800186650011400194  a90 6193 020 0  a100  a581.526 430 913 WHY  aWhyte, Robert Orr  aTropical grazing lands : communities and constitvent species  aThe Hague, Dr.W.Junk b.v.Publishers  c1974  a222  aGrazing lands - tropics/ tropics - grazing lands/ grass covers - tropics/ grass covers - evolution/ graminear