00427nam a2200157Ia 4500008004100000020001500041082001600056100002200072245006700094260003200161300000800193650001800201650001800219653002000237653001200257170901s1978    xx            000 0 und d  a0703126531  a574.5bJ36I  aJeffers, J. N. R. 0aIntroduction to Systems AnalysisbWith Ecological Applications  aLondonbEdward Arnoldc1978  a198  aLife sciences  aPure Sciences  aData processing  aEcology