00460nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001200084100001500096245006400111260003100175300001400206650001400220650004100234700001500275IN-BaIIA211028s9999    xx            000 0 eng d  a0-85274-292-4  cIIA Library  a52bROY  aRoy, A. E. 0aAstronomybprinciples and practicecA. E. Roy and D. Clarke  aBristolbAdam Hilgerc1977  axv, 342p.  aAstronomy  aAstronomy and astrophysics thesaurus  aClarke, D.