00270nam a2200097Ia 4500008004100000082001900041100001800060245004300078260004300121300000800164140113s9999    xx            000 0 und d  a577.4:517   L4  a"Poole, R.W."  aAn Introducion to Quantitative Ecology  a1974bMc Graw Hill -Book Co.cNew York  a532