1
Publicado 1977
“...International Conference on Soil Conservation and Management in the Humid Tropics Ibadan, Nigeria)...”
Procedimiento de la Conferencia
Libro
2
por Greenland, D. J
Publicado 1977
“...International Conference on Soil Conservation and Management in the Humid Tropics, Ibadan, Nigeria...”Publicado 1977
Libro
3
Publicado 1977
“...International Conference on Soil Conservation and Management in the Humid Tropics, Ibadan, Nigeria,...”
Procedimiento de la Conferencia
Libro