Technical papers : 1991 ACSM-ASPRS Annual Convention, Baltimore, 1991 : ACSM 51st Annual Convention, ASPRS 56th Annual Convention
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Technical papers : 1991 ACSM-ASPRS Annual Convention, Baltimore, 1991 : ACSM 51st Annual Convention, ASPRS 56th Annual Convention
American Congress on Surveying and Mapping and American Society for Photogrammetry and Remote Sensing, c1991