共 20 条
- [1] BAR, 1905, J PHYSL PATH, V7
- [2] CROWTHER, 1922, J AGR SCI, V12, P40
- [3] DIBBELT, 1910, OHIO TECH B, V5
- [4] FORBES, 1918, OHIO AGR EXPT STN, V330, P111
- [5] GRISWOLD, 1928, MISSOURI EXPT STA RE, V114, P58
- [6] HAGEMANN, 1890, ARCH ANAT PHYS
- [8] HART, 1914, RES B MADISON AGR ST, V30, P13
- [9] HART, WISCONSIN EXPT STN R, V5
- [10] HOFFSTROM, 1910, SKAND ARCH PHYSL, V23, P326