00465nam a2200181Ia 4500008004100000020001500041082001900056100002000075245003600095260003900131300000800170650001800178650001800196653001200214653001400226700002200240700002100262170901s1998    xx            000 0 und d  a1566703093  a574.5222bC26M  aCech, Joseph J. 0aMultiple Stresses in Ecosystems  aBoca RatonbLewis Publishersc1998  a202  aLife sciences  aPure Sciences  aEcology  aPollution  aCrosby, Donald G.  aWilson, Barry W.