Astronomy and Astrophysics – Astrophysics
Scientist
Astronomy and Astrophysics
Astrophysics
Scientist
Georgetown College Observatory Washington 7, D.C., USA
Colors of Early-Type Stars in the Southern Milky way.
Colors of seven Cepheid variable stars in Cygnus.
Colors of Seven Cepheid Variables in Cygnus.
Comments on ``Nitrogen Oxides on Mars'' by Carl Sagan, Philip L. Hanst and Andrew T. Young
Faint Terrestrial Lines in the Solar Spectrum Near 8200 Å
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