00384nam a2200133 a 450000500170000002000180001708200160003510000160005124500660006725000120013326000500014530000270019570000280022220251203111650.0  a9780199560394  a577.27bBEE  aBeeby, Alan  aFirst Ecologybecological principles and environmental issues  a3rd ed.  aNew YorkbOxford University Pressc1997-R2008  axxix, 403p.c22cm.bPB  aand Brennan, Anne-Maria