00502nam a2200181Ia 4500003000900000008004100009020002200050040001600072080001200088100001400100245006400114250001200178260004700190300001700237650002500254650002700279700001400306IN-BaIIA211028s9999    xx            000 0 eng d  a978-0-7503-0917-2  cIIA Library  a52bROY  aRoy, A. E 0aAstronomybprinciples and practicecA. E. Roy and D. Clarke  a4th ed.  aNew DelhibNutech Photolithopraphersc2011  axxiii, 475p.  aAstronomy-Principles  aObservation techniques  aClarke, D