Zoology Dierkunde 25 Zoologie 20 Animals 13 42.60 zoology: general 6 Biology 6 Animal Population Groups 5 Wildlife conservation 4 Botany 3 Ecology 3 Faune 3 Natural history 3 Zeitschrift 3 Zoología 3 42.65 zoogeography, animal ecology 2 Ame ́nagement 2 Animal ecology 2 Domestic animals 2 Ecologie 2 Evolution (Biology) 2 Fysiologie 2 Livestock 2 Natuurlijke historie 2 Protection 2 Veterinary Medicine 2 42.21 evolution 1 42.63 animal physiology 1 42.92 hydrobiology 1 42.94 marine biology 1 42.95 nature conservation 1