Astro-aid
By:  [Ray Harpin]
Contributors:  United States.   Bureau of Land Management
Publisher: Bureau of Land Management
Published: 1989
Place of publication: [Denver, Colo.]
Language: eng
Number of pages: 10
Subjects: Surveying; Public lands; Spherical astronomy
Notes: "October 30, 1989"--Letter of transmittal.

Photocopy of typescript.

Enclosure to Information bulletin no. SC-90-021.