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Atmospheres in sub-surface structures and sewers : data sheet I-550-79

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      <subfield code="a">This data sheet focuses on various hazards inherent to sub-surface structures, and it points out the necessary procedures that should be followed to avoid physical impairment due to contamination in the surface structures</subfield>
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      <subfield code="a">Estructuras subterráneas</subfield>
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      <subfield code="g">Vol. 119, nº 4, April 1979 ; p. 79-83</subfield>
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