00334nam a22001097a 4500020001800000082001800018100002400036245005900060260004600119300001100165365004800176  a9781603580557  a338.927 bMEA  aDonella H. Meadows   aThinking in Systems bA Primercby Donella H. Meadows   aVetemontbChelsea Green Publishing c2008  a210 p.  jBLRSM/203/CRB131k2023-06-06aINRb1,119.76