共 41 条
- [3] AREND J. L., 1961, Papers from the Michigan Academy of Science, Arts and Letters, V46, P219
- [4] BARNES ROBERT L., 1961, FOREST SCI, V7, P130
- [7] Busgen M., 1929, STRUCTURE LIFE FORES
- [8] CRITCHFIELD WB, 1966, 991 US DEP AGR FOR S
- [10] Durzan D. J., 1963, Plant Physiology, V38, pvi