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NEN ISO 15971 : 2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX
01-04-2014
12-01-2013
Specifies the measurement of calorific value of natural gas and natural gas substitutes by non-separative methods, i.e. methods that do not involve the determination of the gas composition nor calculation from it.
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