TY - JOUR AU - Peter Conti AU - Catharine Garmany AU - C. de Lore AU - D. Vanbeveren BT - The Astrophysical Journal DA - Jan-11-1983 DO - 10.1086/161447 PY - 1983 EP - 302 T2 - The Astrophysical Journal TI - The evolution of massive stars - The numbers and distribution of O stars and Wolf-Rayet stars UR - http://articles.adsabs.harvard.edu/full/1983ApJ...274..302C VL - 274 SN - 0004-637X ER -