00343nam a2200121Ia 4500008004100000082001500041100002400056245003300080260004100113300001000154630001800164650003900182211109s9999||||xx |||||||||||||| ||und||  a576bSTE-P  aStebbins, G Ledyard 0aProcess of Organic Evolution  bPrentice -Hall Inc.aNew Delhic1973  a193p.  xGeneral stack  aSciencevGenetics&evalutionZoology