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Proceedings of the Royal Society B
" By "ecology" we understand the comprehensive science of the relationships of the organism to its surrounding environment, where we can include, in the broader sense, all "conditions of existence"	Berlin, Germany : Georg Reimer

"Energy flow in ecosystems: A historical review".

علم البيئة: "Evolution, population thinking, and essentialism"
علم البيئة: "Human geography and ecological sociology: the unfolding of human ecology, 1890 to 1930 — and beyond"
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