books.google.ithttp://books.google.it/books/about/Norton_s_star_atlas_and_reference_handbo.html?hl=it&id=USISAQAAMAAJ&utm_source=gb-gplus-shareNorton's star atlas and reference handbook (epoch 1950.0)
Review: Norton's Star Atlas and Reference Handbook and Reference Handbook, 20th Edition
Recensione dell'utente - tgrantl - Goodreads
Not optional for amateur astronomers. Not as detailed as Uranometria, but perfect for casual observation with binoculars or small scopes.Leggi recensione completa