00516nam a2200145Ia 4500003000900000008004100009040001600050080002400066245011700090260005000207300001900257650003300276650004100309700002000350IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a520.8(082.2)bOPT-2 0aOptical and infrared telescopes for the 1990scedited by A. Hewitt                                                aArizonabKitt Peak National Observatoryc1980  aix, 616-1194p.  aAstronomical Instrumentation  aAstronomy and Astrophysics Thesaurus  aHewitt, A., ed.