TY - JOUR AU - Peter Conti AU - E. Leep BT - The Astrophysical Journal DA - Jan-11-1974 DO - 10.1086/153135 PY - 1974 EP - 113 T2 - The Astrophysical Journal TI - Spectroscopic observations of O-type stars.V. The hydrogen lines and lambda 4686 HeII UR - http://adsabs.harvard.edu/full/1974ApJ...193..113C VL - 193 SN - 0004-637X ER -