Vandekerkhove, Edgard
The reddening of the extragalactic nebulace / E. Vandekerkhove . - [S.l. : s.n.], 1958 . - [6] p . - (Communications de l'Observatoire Royal de Belgique ; 149)

Extr. de: The Observatory; vol. 78, nš 906 (1958).


Astronomia
Nebulosas

CDU 524.5