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21
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22
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23
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24
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25Published 1988“...HD 2777 .P961...”
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26
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27
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28
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29
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30
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31
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32Published 1975“...HD 2777 .S959...”
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33
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34
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35
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36Published 1986“...HD 2777 .A512 1984 suppl.1...”
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37Published 1985“...HD 2777 .A633 r...”
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38
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39
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40