00885nam a2200193Ia 4500003000900000008004100009040001600050080001900066111009100085245023700176260005800413300001000471490004400481650004100525650002700566700002600593700002800619710004400647IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a52(082.2)bREC  aSymposium on Recent Advances in Observational AstronomycMexicod1979 Sept. 18-19 0aRecent advances in observational astronomybsymposium on recent advances in observational astronomy Ensenada, Mexico, 18-19 September 1979cedited by Harold L. Johnson and Christine Allen                                          aMexicobUniversidad Nacional Autonoma De Mexicoc1981  a165p.  aUniversidad Nacional Autonoma de Mexico  aAstronomy and astrophysics thesaurus  aAstronomy-Observations  aAllen, Christine, ed.  aJohnson, Harold L., ed.  aUniversidad Nacional Autonoma De Mexico