International Conference for the Protection of Nature : (Brunnen, June 28th - July 3rd 1947) : proceedings, resolutions and reports = Conférence internationale pour la protection de la nature : (Brunnen, 28 juin - 3 juillet 1947) : procés-verbaux, résolutions et rapports /
International Conference for the Protection of Nature(1947 :Brunnen, Switzerland)
Büttikofer, Johann.
Provisional International Union for the Protection of Nature,publisher.
Includes bibliographical references (pages ) and index.