Deep Hα survey of the Milky Way - IV. The l = 301o to l = 324o area D. Russeil, Y. M. Georgelin, P. Amram, J. L. Gach, Y. P. Georgelin and M. Marcelin Astron. Astrophys. Suppl. Ser., 130 1 (1998) 119-132 Published online: 15 May 1998 DOI: 10.1051/aas:1998406