1
Published in 1950
monograph
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2
Published in 1956
monograph
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3
Published in 1956
monograph
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4
Published in 1965
monograph
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5
Published in 1958
journal article
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6
Published in 1937
journal article
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8
Published in 1935
journal article
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11
Published in 1957
monograph
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16
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