R. W. Argyle
Observing and Measuring Visual Double Stars - 2nd ed. 2012 - Springer New York 2012 - The Patrick Moore Practical Astronomy Series .
9781461439455
Physics and Astronomy
Observing and Measuring Visual Double Stars - 2nd ed. 2012 - Springer New York 2012 - The Patrick Moore Practical Astronomy Series .
9781461439455
Physics and Astronomy