Fri Jul 14 18:44:18 1989 veg.math globe lozar cell NASA Goddard Space Flight Center Technical Memorandum 86107: Natural (Pre-agricultural) Vegetation, E. Matthews, 1983 generated by Mimportcell Natural (Preagricultural) vegetation based on the UNESCO classification system. A complete discussion of the vegetation data set is found in: E. Matthews, 1983, Global Vegetation and Land Use: New High Resolution Data Bases for Climate Studies, "J. Climat. Appl. Meteor." 22, 474-487 Processing to GRASS format by R. Lozar at Construction Eng. Research Lab, Champaign, IL