Computation of times of sunrise, sunset, and twilight in or near mountainous terrain
An edition of Computation of times of sunrise, sunset, and twilight in or near mountainous terrain (1977)
By Bill C Ryan
Publish Date
1977
Publisher
Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station
Language
eng
Pages
-
Description:
subjects: Sun, Twilight, Rising and setting