The Radio Frequency Detection of Interstellar Hydrogen Radiation from Galactic Hydrogen at 1420 MHz

Two drafts, same title; one with editorial marks, n.d. but after 1958 based on citations. The drafts are only similar in title, authorship, and first half of first sentence

Papers of Kenneth I. Kellermann

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Text

1958

Distinctly different drafts

Kellermann Publications Series

Star Noise Unit

7B

4