Determination of total nitrogen, total phosphorus, total potassium, total sodium, total calcium, total magnesium in forest plant and forest floor (method for wet digestion with sulphuric and perchloric acid)
NORM herausgegeben am 1.1.1987
Designation standards: GB 7888-1987
Note: UNGÜLTIG
Publication date standards: 1.1.1987
Country: Chinese technical standard
Kategorie: Technische Normen GB