DIN 54378 PDF
Testing of paper and board – Determination of the surface colony count (OKZ)
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Testing of paper and board – Determination of the surface colony count (OKZ)
Deutsches Institut Fur Normung E.V. (German National Standard) , 02/01/2021
DIN 54378 PDF
Testing of paper and board – Determination of the surface colony count (OKZ)