00601nam a2200181Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 0-309-03335-7 IIA Library 52:524 ASC Astronomy Survey Committee (National Academy Press (U.S.)) 14163 Challenges to astronomy and astrophysics Astronomy Survey Committee Washington National Academy Press 1983 xxii, 272p. Astronomy 80 Astronomy and astrophysics thesaurus BK 8451 8451 0 0 0 0 BAN BAN GEN 1985-09-05 0 52:524/ ASC 9303 2021-11-05 1985-09-05 BK