00377nam a2200157Ia 4500008004100000020001500041082001600056100002100072245002500093250000600118260003900124300000800163650001800171650001800189653001200207170901s1978    xx            000 0 und d  a0801628024  a574.5bK98C  aKucera, Clair L. 0aChallenge of Ecology  a2  aSaint LouisbC. V. Mosby Co.c1978  a326  aLife sciences  aPure Sciences  aEcology