Advanced amateur astronomy
North, Gerald
Advanced amateur astronomy Gerald North - 2nd edition - Cambridge Cambridge University Press 1997 - xiii, 400 p. fig., tab. 26 cm.
Includes bibliographical references and index
0521574307
Αστρονομία
Τηλεσκόπια
520
Advanced amateur astronomy Gerald North - 2nd edition - Cambridge Cambridge University Press 1997 - xiii, 400 p. fig., tab. 26 cm.
Includes bibliographical references and index
0521574307
Αστρονομία
Τηλεσκόπια
520