Baldwin, J. E.
6 C survey of radio sources declination zone Delta > +80 degree : Part 1 to 3 / by J. E. Baldwin, and R. C. Boysen. - Cambridge : University of Cambridge, S. N. - p. : ill. ;
Catalog.
6 C survey of radio sources declination zone Delta > +80 degree : Part 1 to 3 / by J. E. Baldwin, and R. C. Boysen. - Cambridge : University of Cambridge, S. N. - p. : ill. ;
Catalog.