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21
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22Published 1982“...HD 9502 .U52 .D611 1982...”
Book -
23
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24
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25Published 1980“...HD 1741 .A78 .I71...”
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26Published 1987“...HD 60.5 .U5 .B9785...”
Book -
27
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28Published 1985“...HD 2922 .B979...”
Book -
29
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30Published 1982“...HQ 1154 .S416...”
Book -
31
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32
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33
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34
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35
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36Published 1974“...HD 9710 .U52 .M961...”
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37
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38
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39
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40