共 35 条
[1]
ANDERSON JK, 1958, Patent No. 2845450
[2]
Charles S.J., 1958, U.S. Patent, Patent No. [No. 2,823,223, 2823223]
[3]
CONCA RJ, 1966, Patent No. 3238158
[4]
DURKEE GE, 1965, AGRICHEM W, V1, P17
[5]
GRAY KR, 1962, Patent No. 3062783
[6]
GRAY KR, 1961, Patent No. 2999108
[7]
GRAY KR, 1972, Patent No. 3706545
[8]
GRAY KR, 1957, Patent No. 2782241
[9]
Hall JA, 1971, UTILIZATION DOUGLAS
[10]
Hergert H. L., 1960, Forest Products Journal, V10, P610