Computation of times of sunrise, sunset, and twilight in or near mountainous terrain
By: Bill C. Ryan
Contributors: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.); United States. Forest Service
Series: USDA Forest Service research note PSW ; 322
Publisher: Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station
Published: 1977
Place of publication: Berkeley, Calif
Language: eng
Subjects: Sun -- Rising and setting; Twilight