00303nam a2200121Ia 4500008004100000020001800041082001500059100002200074245002600096250000800122260004300130300000800173190710s9999    xx            000 0 und d  a1-4051-4933-7  a574.5 T663  aTownsend, Colin R 0aEssentials of ecology  a2nd  aMaldenbBlackwell Publishing Comc2006  a530