EUROPEAN BISON CONSERVATION CENTER WEB
BISON SPECIALIST GROUP - EUROPE WEB
EUROPEAN BISON FRIENDS SOCIETY WEB
EUROPEAN GENE RESOURCE BANK WEB
EUROPEAN BISON PEDIGREE BOOK WEB
INTERNATIONAL UNION FOR CONSERVATION OF NATURE WEB
LARGE HERBIVORE FOUNDATION WEB
GREEN FACTS BIODIVERSIDAD WEB
FOTOS DE LA NATURA IGOR SHPILENOK WEB
UNEP -WORLD CONSERVATION MONITORING CENTRE WEB
WWF - ENDANGERED SPECIES - WEB
EAZA - EUROPEAN ASSOCIATION OF ZOOS & AQUARIUMS - WEB
WAZA - WORLD ASSOCIATION OF ZOOS & AQUARIUMS - WEB
CRUELTY FREE INTERNATIONAL WEB