DICTIONARY OF ABBREVIATIONS AND ACRONYMS IN GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING
By Philip Hoehn (David Rumsey Collection) and Mary Lynette Larsgaard (Map & Imagery Laboratory, University of California, Santa Barbara Library). Designed by John Creaser (Earth Sciences & Map Library, University of California, Berkeley)

http://www.lib.berkeley.edu/EART/abbrev.html#a