CYGNUS LOOP AND SOME RELATED NEBULOSITIES

[11] PICKELNER SB, 1954, IZVEST CRIMEAN ASTRO, V12, P93

[12] RISHBETH H, 1956, AUST J PHYS, V9, P494

[13] SEEGER, 1956, B ASTRON SOC NETH, V13, P89

[11] PICKELNER SB, 1954, IZVEST CRIMEAN ASTRO, V12, P93

[12] RISHBETH H, 1956, AUST J PHYS, V9, P494

[13] SEEGER, 1956, B ASTRON SOC NETH, V13, P89