1. Turbo Pascal version 3.0 reference manual;Borland International,1985
2. High-resolution printer graphics;Bridger;Byte,1985
3. Product specifications for Digital Landmass System (DLMS) Data Base;Defense Mapping Agency;Stock No. SPEXDLMS2,1983
4. USGS digital cartographic data standards: digital elevation models;Elassal;U.S. Geol. Survey Circ.,1983
5. TERRANAL: Microcomputer terrain mapping package, ACSM—ASPRS;Guth,1986