共 7 条
[1]
BOULD C, 1960, J SCI FD AGRIC, V11, P299
[2]
Bradstreet R., 1965, KJELDAHL METHOD ORGA, DOI 10.1016/C2013-0-12545-7
[3]
GINZBERG KE, 1960, SOVIET SOIL SCIENCE, P544
[4]
HUTTON R. G., 1958, Journal of the Science of Food and Agriculture, V9, P7, DOI 10.1002/jsfa.2740090102
[7]
1968, 1967 E MALL RES STAT