00433nam a2200121Ia 450000500170000000800410001702000150005805000270007310000260010024500980012626000430022465000440026720251229084832.0251229s9999    xx            000 0 und d  a0444421793  aQH 541.15 .S5A5  1983   aLauenroth, William K. 0aAnalysis of ecological systemsb state of the art in ecologial modellingcWilliam K Lauenroth  aArmsterdamb Elsevier Scientificc1983  aEcology- Simulation Methods--- Congress