00492nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001600084100001900100245008900119260002700208300001500235650001400250650004100264650001700305IN-BaIIA211028s9999    xx            000 0 eng d  a0-910533-00-8  cIIA Library  a521.03bHAR  aHarwit, Martin 0aAstrophysical conceptscMartin Harwit                                                 aIthacabConceptsc1973  axiv, 561p.  aAstronomy  aAstronomy and astrophysics thesaurus  aAstrophysics