The SciencesDecember 1, 1939
Answer, Echo, Answer
There are Echoes that Magnify Sound and Others that Change Harsh Discords to Harmony, Echoes that Analyze Sound, Whispering Galleries
Stories by Albert Carr
Answer, Echo, Answer
There are Echoes that Magnify Sound and Others that Change Harsh Discords to Harmony, Echoes that Analyze Sound, Whispering Galleries