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    <marc:controlfield tag="003">CaOODSP</marc:controlfield>
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      <marc:subfield code="a">Guide for radon measurements in residential dwellings (homes) </marc:subfield>
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      <marc:subfield code="a">Ottawa : </marc:subfield>
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      <marc:subfield code="c">2017.</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Guide sur les mesures du radon dans les maisons.</marc:subfield>
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      <marc:subfield code="a">"Publication date: May 2017"--Verso of cover.</marc:subfield>
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      <marc:subfield code="a">“This document is intended for persons and organizations carrying out radon testing in residential homes. The purpose of the testing is to evaluate radon levels in order to determine the need for remedial action to protect the occupants. The scope of this document is limited to guidance regarding types of measurement devices, device placement, measurement duration, and the interpretation of measurements. There is also brief mention of some preventive measures now available for new home construction"--Introd., p. 3.</marc:subfield>
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      <marc:subfield code="t">Guide sur les mesures du radon dans les maisons </marc:subfield>
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