Astrophysics Data System (ADS)Query Results from Astronomy DatabaseQuery Parameters:Title words: (COPERNICUS and NASA) or OAO-3 and not Nichol* Query words: (COPERNICUS and NASA) or OAO-3 and not Nichol* Start date: 00/1970 End date: 12/1997 Title Query Settings: Boolean Logic: ON Abstract Text Query Settings: Boolean Logic: ON |