TY - ECHAP AU - D. Perry AU - Peter Conti CY - Dordrecht DO - 10.1007/978-94-009-7910-9_14 M1 - International Astronomical Union/Union Astronomique Internationale PB - Springer Netherlands PP - Dordrecht PY - 1982 SN - 978-90-277-1470-1 SP - 109 EP - 112 TI - H/He Ratios for WN Stars in the LMC and the Galaxy ER -