Some Problems Concerning the Structure and Dynamics of the Galactic System and the Elliptical Nebulae NGC 3115 and 4494. (original) (raw)
Oort, J.H. (1940)
Some Problems Concerning the Structure and Dynamics of the Galactic System and the Elliptical Nebulae NGC 3115 and 4494
Date
1940
Publisher
University of Chicago Press, Chicago