Title: Position determination with Loran-C triplets using the Hewlett-Packard HP-75C, the Sharp PC-1500 (TRS-80 PC-2) or the Radio Shack TRS-80 Model100 portable computers
Subjects: Geographical positions, Problems, exercises, Loran, Hyperbolic navigation, HP-75C (Computer), TRS-80 PC-2 (Computer), Computer programs, PC-1500 (Computer), Portable computers, TRS-80 Model 100 (Computer)