共 7 条
[1]
[Anonymous], 1944, SOIL PLANT ANAL
[3]
Clausen J., 1948, CARNEGIE I WASHINGTO, V581, p[i, 1]
[5]
RAMAKRISHNAN P. S., 1961, PROC NATL INST SCI INDIA PART B BIOL SCI, V27, P347
[6]
RAMAKRISHNAN P. S., 1961, J INDIAN BOT SOC, V40, P66
[7]
SNAYDON R. W., 1961, New Phytologist, V60, P219, DOI 10.1111/j.1469-8137.1961.tb06254.x