RGU Three-Colour-Photometry Towards the North Galactic Pole: Halo-To-Disk Mass Ratio Fenkart, R. P. ; Steinlin, U. W. Abstract Publication: Highlights of Astronomy Pub Date: 1977 DOI: 10.1017/S1539299600002999 Bibcode: 1977HiA.....4B..53F