Detaljer
- TitelDeclination +20
- ReferensCDC.S5.2
- Omfattning och innehållPrints from telescopic photography taken at declination +20 from right ascension 0 hours, 0 minutes through 23 hours, 52 minutes. There are increments of 8 minutes between the center of each print.
- ISBN
- cartographic material
- BeskrivningsnivåFILE