Nature conservation 21 Conservation 6 Natural history 5 Nature 5 Protection 5 42.95 nature conservation 4 Conservation of natural resources 4 Ecologie 4 Ecology 4 Sciences naturelles 4 Zeitschrift 4 Conservación de la naturaleza 3 Conservation biology 3 E ́cologie 3 Environnement 3 Faune 3 Wildlife conservation 3 Wildlife management 3 42.65 zoogeography, animal ecology 2 Ame ́nagement 2 Biologie 2 Conservation des ressources naturelles 2 Environment 2 Environmental protection 2 Fishing 2 Hunting 2 Law and legislation 2 Naturschutz 2 Natuurbeheer 2 Re ́serves de la vie sauvage 2