{{center{[img(300px,auto)[https://www.researchgate.net/profile/Eldon_Blancher/publication/267869179/figure/fig1/AS:295453158592512@1447452930344/Emergy-systems-diagram-Source-Howard-T-Odum-Emergy-Evaluation-In-Proc.png]]
O início da ecologia sistêmica com Howard Odum e JR Forrester}}}