Home › Authors › Papua-New Guinea) Symposium on the Impact of Man on Humid Tropics Vegetation (1960 Goroka 👤 Papua-New Guinea) Symposium on the Impact of Man on Humid Tropics Vegetation (1960 Goroka 1 book Books by Papua-New Guinea) Symposium on the Impact of Man on Humid Tropics Vegetation (1960 Goroka Symposium on the Impact of Man Symposium on the Impact of Man on Humid Tropics Vegetation, Goroka, Territory of Papua and New Guinea, September, 1960 1960