共 6 条
- [1] EGLER FE, 1949, RIGHT WAY MAINTENANC
- [2] EGLER FE, 1951, ELECTRIC LIGHT POWER, V29, P98
- [3] EGLER FE, 1951, RAILWAY ENG MAINTENA, V47, P142
- [4] Fernald M. L., 1950, GRAYS NEW MANUAL BOT
- [5] SECOR W, 1938, USDA SERIES, V8
- [6] 1935, CLIMATIC SUMMARY US, V82