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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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36
Structural aspects of the allotropy of sulfur and the other divalent elements
Foilsithe / Cruthaithe 1967LEABHAR -
37
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38
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39
Brimstone the stone that burns; the story of the Frasch sulphur industry
Foilsithe / Cruthaithe 1959LEABHAR -
40


