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21
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22
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23
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24Published 1983“...QC 851 .S471...”
Conference Proceeding Book -
25
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26
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27
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28
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29Published 1973“...QC 798 .D3 .I61...”
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30Published 1988Conference Proceeding Book
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31
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32
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33Published 1988“...QC 992.5 .A1 .R8885 1988...”
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34
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35
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36
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37Published 1988“...QC 981.8 .C5 .C6388...”
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38
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39
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40