TY - JOUR AU - A. Kingston BT - Astrophysical Journal N1 - JILA Pub. 57 PY - 1964 EP - 736 T2 - Astrophysical Journal TI - The Populations of the Discrete Levels of Atomic Hydrogen in the Chromosphere UR - http://adsabs.harvard.edu/full/1964ApJ...140..736K VL - 140 ER -