TY  - BOOK
AU  - Roth, Gunter D.
TI  - Handbook of practical astronomy 
SN  - 978 3 540 76377 2
PY  - 2009///
CY  - New York
PB  - Springer
KW  - AstronomyOptics And TelescopesPhotometryPractical AstronomyAstrophotographyEarth And Solar System
ER  -