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by Sperry, Armstrong, 1897-1976
Published 1940
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“...Sperry, Armstrong, 1897-1976,...”Published 1940
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by Kummer, Frederic Arnold, 1873-1943.
Published 1940
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1940
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13
by Lansing, Marion Florence, 1883-1966.
Published 1941
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1941
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14
by Means, Florence Crannell, 1891-1980.
Published 1938
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1938
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15
by Lloyd, Trevor, 1906-1995.
Published 1945
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1945
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16
Published 1947
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“...Sperry, Armstrong, 1897-1976....”
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17
by Lloyd, Trevor, 1906-1995.
Published 1945
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1945
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by Kummer, Frederic Arnold, 1873-1943.
Published 1940
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1940
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by Bowman, James Cloyd, 1880-1961.
Published 1941
Other Authors:
“...Sperry, Armstrong, 1897-1976,...”Published 1941
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