Piet van Tienhoven 1875–1953 : een biografische schets
2015
Bosscher, Frans |
Spijkerboer, Jan |
IUPN
Il movimento italiano per la protezione della natura (1948-2018)
2018
Pedrotti, Franco |
Programme de la conférence pour l'établissement de l'union internationale pour la protection de la nature = Programme of the Conference for the Establishment of the International Union for the Protection of Nature
1948
The programme of the Conference for the Establishment of the International Union for the Protection of Nature contains information about the organisation and the agenda of this conference.
Union internationale pour la protection de la nature créée à Fontainebleau, le 5 octobre 1948
1948
Bernard, Ch. J. |
Was ist Naturschutz?
1953
International Union for the Protection of Nature established at Fontainebleau, 5 October 1948
1948
Bernard, Ch. J. |
