Fertilizantes. Determinación de nitrógeno nítrico y amoniacal según Arnd.
Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
Engrais - Détermination de l'azote nitrique et ammoniacal selon Arnd
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65.080 / Fertilizers
CTN 142 - Fertilizers, liming materials and means of growing
CEN/TS 15559:2007 (Identical)
It is cancelled by: UNE-EN 15559:2009
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