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Published by NASA, Washington DC, 1970
Seller: The Sensible Magpie, Creswell, OR, U.S.A.
Paperback. Condition: Good Plus. "Ray-tracing techniques are used extensively in the study and understanding of propagation of electromagnetic waves in any media (neutral, magneto-ionic, etc.). Combined with experimental data, the ray-tracing technique has served as a powerful tool." Begins with a general description of the program, then how to run the program, and ends with extensive information on the program structure. 296 pp. Light edgewear, light soiling to front cover 3", light scuffing to surfaces. Closed tear .5" at top of front cover/spine. Slight curling to lower front cover corner. Text is clean.