2

Evaluation of acid permanganate extraction as an index of soil nitrogen availability

Année:
1984
Langue:
english
Fichier:
PDF, 299 KB
english, 1984
3

Modification of the acid permanganate method for obtaining an index of soil nitrogen availability

Année:
1985
Langue:
english
Fichier:
PDF, 168 KB
english, 1985