(1934). The northern hemisphere constellations and how to find them during each month of any year; a popular guide to the starry heavens with notes for small telescopes; 16 maps.
Cita Chicago (17th ed.)The Northern Hemisphere Constellations and How to Find Them During Each Month of Any Year; a Popular Guide to the Starry Heavens with Notes for Small Telescopes; 16 Maps. 1934.
Cita MLA (9th ed.)The Northern Hemisphere Constellations and How to Find Them During Each Month of Any Year; a Popular Guide to the Starry Heavens with Notes for Small Telescopes; 16 Maps. 1934.
Atenció: Aquestes cites poden no estar 100% correctes.