Human Geography SOCIAL SCIENCE Human ecology 166 Écologie humaine 126 History 74 Human geography 70 Nature 65 Effect of human beings on 64 Êtres humains 63 Ecology 57 Histoire 57 Influence sur la nature 54 Environnement 52 human ecology 49 Environmental conditions 48 Social aspects 44 Aspect social 34 Philosophy 32 Philosophie 31 Conditions environnementales 29 Paysages 28 Human beings 26 Anthropology 25 General 24 Geographical perception 23 Perception géographique 23 Environmental degradation 21 Humanökologie 21 Dégradation 20 Effect of environment on 20