Books by John Charles Duncan
Essentials of astronomy
Astronomy, a text book
Astronomy, a text book
The spectroscopic binary Boss
The spectroscopic binary Boss 3644 Virginis
The spectroscopic orbit of the
The spectroscopic orbit of the Cepheid variable X Cygni
Bright nebulae and star cluste
Bright nebulae and star clusters in Sagittarius and Scutum