TY  - BOOK
AU  - Argyle, R. W. 
TI  - Observing and Measuring Visual Double Stars
T2  - The Patrick Moore Practical Astronomy Series
SN  - 978-1-4614-3944-8 (Print)
SN  - 1431-9756
PY  - 2012///
CY  - New York
PB  - Springer New York
KW  -  Astronomy, Observations and Techniques
KW  - Physics
UR  - http://doi.org/10.1007/978-1-4614-3945-5
ER  -