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21
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22
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23
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24
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25
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26
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27Published 1983“...QC 875 .A532 5th...”
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28Published 1987“...QC 871 .N279...”
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29Published 1986“...QC 851 .N532 i no. 14...”
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30
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31
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32Published 1981“...QC 981.4 .W362...”
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33
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34Published 1987“...QC 981.8 .C5 .C6383...”
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35
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36Published 1972“...QC 879 .I61 c 1972...”
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37
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38
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39
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40