1
Published 1950
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2
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3
Published 1984
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4
Published 2002
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Electronic Journal
6
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7
by Cannon, Walter B. 1871-1945.
Published 1936
Book
14
Published 1920
Conference Proceeding Book
18
by Diehl, Harold S. 1891-1973.
Published 1944
Book
20
Published 2006
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