共 23 条
[1]
BEAUFILS E. R., 1971, Fertilizer Society of South Africa Journal, V1, P1
[2]
Beaufils E. R., 1976, Proceedings, South African Sugar Technologists' Association, P118
[3]
Beaufils E.R., 1957, FERTILITE, V3, P27
[4]
BEAUFILS ER, 1956, ANN AGRON, V2, P205
[5]
BEAUFILS ER, 1973, 1 U NAT SOIL SCI B
[8]
DEMOOY CJ, 1971, 572 IOW STAT AGR EXP
[9]
DEMOOY CJ, 1965, THESIS IOWA STATE U
[10]
FRAZIER R, 1966, THESIS PURDUE U