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21
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22
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23
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24Published 1997“...HQ 759.48 .U58...”
Book -
25
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26
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27Published 1991“...HQ 1587 .D479...”
Book -
28Published 1992“...HQ 1587 .W527...”
Book -
29
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30
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31Published 1998“...HD 6052 .A748...”
Conference Proceeding Book -
32
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33
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34
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35
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36
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37Published 1998“...HQ 1588 .P467...”
Book -
38
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39
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40Published 1997“...HD 4904.25 .B565...”
Book