TY - JOUR AU - Peter Conti AU - M. Leep AU - D. Perry BT - The Astrophysical Journal DA - Jan-05-1983 DO - 10.1086/160948 PY - 1983 EP - 228 T2 - The Astrophysical Journal TI - The spectra of Wolf-Rayet stars. I - Optical line strengths and the hydrogen-to-helium ratios in WN type stars UR - http://articles.adsabs.harvard.edu/full/1983ApJ...268..228C VL - 268 SN - 0004-637X ER -