The Worldwide Hum
Glenn MacPherson is studying the worldwide hum, a low frequency noise only a few experience hearing.
-DDLabels: Radio spectrum, Worldwide hum
Information Sources & Information Sifting Techniques

I am a retired librarian, most recently serving at Indiana Wesleyan University's Cleveland Education Center.
Glenn MacPherson is studying the worldwide hum, a low frequency noise only a few experience hearing.
-DDLabels: Radio spectrum, Worldwide hum
posted by David Dial | 12:06 AM
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