TY - CPAPER
AU - Katharine Gebbie
AU - R. Steinitz
CY - Queensland, Australia
N1 - JILA Pub. 1250
PB - Reidel, Dordrecht, Netherlands
PP - Queensland, Australia
PY - 1974
TI - Comparison of H alpha and Ca II H and K spectroheliograms as a diagnostic probe
ER -