GSDIG version 2.0; a program to determine latitude/longitude coordinates, and GSDXY version 1.0, a counterpart program to determine X, Y coordinates, using a microcomputer (IBM PC or compatible) and digitizer (Q92114)

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GSDIG version 2.0; a program to determine latitude/longitude coordinates, and GSDXY version 1.0, a counterpart program to determine X, Y coordinates, using a microcomputer (IBM PC or compatible) and digitizer; 1988; OFR; 88-428-A; Selner, Gary I.;...
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GSDIG version 2.0; a program to determine latitude/longitude coordinates, and GSDXY version 1.0, a counterpart program to determine X, Y coordinates, using a microcomputer (IBM PC or compatible) and digitizer
GSDIG version 2.0; a program to determine latitude/longitude coordinates, and GSDXY version 1.0, a counterpart program to determine X, Y coordinates, using a microcomputer (IBM PC or compatible) and digitizer; 1988; OFR; 88-428-A; Selner, Gary I.;...

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