Dewitt, C. .
Black Holes Les Astres Occlus / - New York : Gordon and Breach Science Publishers , 1962 - xii, 552p ;
Mathematics
B9:6 / L3D;1
Black Holes Les Astres Occlus / - New York : Gordon and Breach Science Publishers , 1962 - xii, 552p ;
Mathematics
B9:6 / L3D;1