TY - JOUR AU - M. Vardya BT - The Observatory N1 - JILA Pub. 189 PY - 1966 SP - 32 EP - 34 T2 - The Observatory TI - Electron pressure, negative ions and M-spectral type stars UR - http://articles.adsabs.harvard.edu/full/1966Obs....86...32V VL - 86 ER -