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)
NORMA vydaná dňa 1.1.1987
Designation standards: GB 7888-1987
Note: NEPLATNÁ
Publication date standards: 1.1.1987
Country: Chinese technical standard
Kategória: Technické normy GB