共 39 条
[2]
[Anonymous], 1982, SAS USERS GUIDE
[3]
[Anonymous], 1965, S AM SOC AGRON 9 MOD
[4]
Barber S. A., 1984, SOIL NUTRIENT BIOAVA
[5]
BEAR FE, 1945, N J AGR EXPT STN B, V721
[6]
BEAUFILS E. R., 1971, Fertilizer Society of South Africa Journal, V1, P1
[7]
Beaufils E. R., 1976, Proceedings, South African Sugar Technologists' Association, P118
[8]
BEAUFILS E. R., 1959, Revue generale du caoutchouc, V36, P225
[9]
BEAUFILS E. R., 1958, Revue generale du caoutchouc, V35, P922
[10]
Beaufils E.R., 1957, FERTILITE, V3, P27