Da Tolomeo a Copernico.
Da Vinci Secretary. (Slovenian Title: Da Vincijev tajnik)
DA white dwarf effective temperatures determined from IUE Lyman-alpha profiles
DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
DA530 - a supernova remnant in a stellar wind bubble.
Dachas in the sky.
DACs and SACs phenomena in the C IV emitting regions of QSOs
Dados Astronómicos para os Almanaques de 1995 para Portugal.
Dados Astronómicos para os Almanaques de 1996 para Portugal.
Dados Astronómicos para os Almanaques de 1997 para Portugal.
Dados Astronómicos para os Almanaques de 1998 para Portugal.
Daguerreotypes of the Moon exhibited
Daily Cloud Coverage
Daily Digital Mt Wilson CaK Images and Plage Areas 1915-1985
Daily Flux Monitoring of 35 Pulsars
Daily Full-Disk SOLIS Inverted Vector Magnetic Field Data
Daily geomagnetic variations on the Iberian Peninsula
Daily mid-latitude F2-region foF2 variation with R frequency foF2 variation with daily sunspot number R}
Daily Monitoring of 35 Slow Pulsars
Daily observations of compact radio sources at 2.7 and 8.1 GHz - 1979-1987