Results
- Telescope, v. 29, n. 1 (January-February 1980 )
- Telescope, v. 29, n. 2 (March-April 1980 )
- Telescope, v. 29, n. 3 (May-June 1980 )
- Telescope, v. 29, n. 4 (July-August 1980)
- Telescope, v. 29, n. 5 (September-October 1980)
- Telescope, v. 29, n. 6 (November-December 1980)