00544nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001600084110006300100245010700163260004500270300001600315650001400331650004100345IN-BaIIA211028s9999    xx            000 0 eng d  a0-309-03335-7  cIIA Library  a52:524bASC  aAstronomy Survey Committee (National Academy Press (U.S.)) 0aChallenges to astronomy and astrophysicscAstronomy Survey Committee                                    aWashingtonbNational Academy Pressc1983  axxii, 272p.  aAstronomy  aAstronomy and astrophysics thesaurus