Søkte etter:

3 treff

Planetary nebulae : proceedings of the 155th Symposium of the International Astronomical Union, held in Innsbruck, Austria, July 13-17, 1992
edited by R. Weinberger and A. Acker
Bok Engelsk 1993
Astronomical methods and calculations
Agnes Acker and Carlos Jaschek ; translat...
Bok Engelsk 1986
Initiation à l'astronomie
Acker, Agnes
Bok Fransk 1978