Proceedings of the second regional workshop on a global soils and terrain digital database and global assessment of soil degradation / ed. W.L. Peters
Workshop organized in the framework of the GLASOD project of UNEP-ISRIC, 12-15 December 1988, at Faculdade de Agronomia, UFRGS, Porto Alegre, Brazil
Proceedings of the second regional workshop on a global soils and terrain digital database and global assessment of soil degradation