World national parks : progress and opportunities
1972
Harroy, Jean-Paul |
Osten, Richard van |
Harroy, Jean-Paul
Le Ruanda-Urundi : ses ressources naturelles, ses populations
1956
Harroy, Jean-Paul |
Lebrun, J. |
Philemotte, V. G. |
Biche, Y. |
Laurent, R. |
Symoens, J. J. (Jean-Jacques) |
Guillaume, H. |
Afrique : terre qui meurt : La dégradation des sols africains sous l'influence de la colonisation
1944
Harroy, Jean-Paul |
Les voeux pieux du rapport Brundtland : allons-nous changer ou périr
Harroy, Jean-Paul |
Les parcs naturels de l'Europe
Harroy, Jean-Paul |
The tropics
1958
Rüe de la, E. |
Bourlière, François |
Harroy, Jean-Paul |
Protégeons la nature : elle nous le rendra
1946
Harroy, Jean-Paul |
Addendum - corrigendum to the second edition of United Nations list of national parks and equivalent reserves, including data received to 30 June 1972
1972
Harroy, Jean-Paul |
Addendum - corrigendum to the second edition of the United Nations list of national parks and equivalent reserves including data received to 30 June 1972
1972
Harroy, Jean-Paul |
Wildlife preservation in semi-arid areas : papers presented at the third Technical Meeting of the International Union for Conservation of Nature and Natural Resources, Caracas 1952
1958
Villiers, A. |
Harroy, Jean-Paul |