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Solar energy. Reference solar spectral irradiance at the ground at different receiving conditions. Direct normal and hemispherical solar irradiance for air mass 1,5.
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Solar energy. Calibration of a pyranometer using a pyrheliometer.
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Solar energy. Calibration of pyranometers by comparison to a reference pyranometer.
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Photography. Source document microfilms. Determination of ISO speed and ISO average gradient.
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Optics and optical instruments. Geodetic and surveying instruments. Vocabulary.
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Tracked Changes. Optics and optical instruments. Geodetic and surveying instruments. Vocabulary.
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Textile floor coverings. Castor chair test.
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Unplasticized poly(vinyl chloride) (PVC-U) pipes. Dichloromethane resistance at specified temperature (DCMT). Test method.
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Thermoplastics piping systems. Crushing test for moulded fittings.
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Thermoplastics pipes for the transport of fluids. Determination of Charpy impact properties. General test method.
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