共 58 条
[21]
HAMILTON GJ, 1974, FOR COMM B LONDON, V52
[22]
KELLISON RC, 1983, SILVICULTURA, V31, P593
[23]
Laar A. van, 1982, South African Forestry Journal, P52
[24]
LADRACH WE, 1983, UTTAR PRADESH FOR B, V42, P56
[25]
LUCKHOFF H. A., 1955, JOUR S AFRICAN FOREST ASSOC, V25, P1
[26]
MARSH E K, 1967, Bosbou in Suid-Afrika, P63
[27]
MARSH EK, 1972, FOR S AFR, V14, P103
[28]
MESKIMEN G, 1978, Southern Journal of Applied Forestry, V2, P3
[30]
OCONNOR AJ, 1935, 4TH P BRIT EMP FOR C