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21
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22
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23
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24Published 1977“...HC 622 .A9387...”
Book -
25Published 1976“...HT 395 .A9 .A938...”
Conference Proceeding Book -
26Published 1978“...HD 6960.5 .A9 .A938...”
Conference Proceeding Book -
27
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28Published 1976“...HN 843 .S678...”
Book -
29
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30
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31
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32
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33
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34
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35Published 1980“...HD 9698 .P22 .A938...”
Book -
36
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37
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38
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39
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40