John Charles Duncan

1882

• Astronomy
• A manual of laboratory astronomy for use in introductory courses
• Astronomy
• Astronomy, a text book
• Bright nebulae and star clusters in Sagittarius and Scutum
• Changes in the spectrographic elements of Y Sagitarii
• Essentials of astronomy
• The spectroscopic binary Boss 3644 Virginis
• The spectroscopic orbit of the Cepheid variable X Cygni