"Evolution, population thinking, and essentialism"
Berlin, Germany : Georg Reimer
خريطة مفاهيم علم بيئة المجتمعات الحيوية
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علم البيئة
" 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"
خريطة مفاهيم لدرس علم بيئة المجتمعات الحيوية
"Human geography and ecological sociology: the unfolding of human ecology, 1890 to 1930 — and beyond"