3
Published in 1980
monograph
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4
6
8
Published in 1960
monograph
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11
Published in 1980
journal article
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13
15
16
Published in 1946
monograph
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17
Published in 1939
journal article
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18
Published in 1950
journal article
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19
Published in 1985
monograph
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20
Published in 1987
journal article
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