Elado
egy eredeti kivalo allapotban levo RNGC katalogus. A pontos megnevezese:
J. W. Sulentic and W. G. Tifft: THE REVISED NEW GENERAL CATALOGUE OS
NONSTELLAR ASTRONOMICAL OBJECTS.
Kiado: THE UNIVERSITY OF ARIZONA PRESS TUCSON, ARIZONA
20 x 60 -as binokular csere is erdekel!
HEV
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