共 35 条
- [1] APPLEMAN CO, 1921, J AGR RES, V20, P795
- [2] *ASS OFF AGR CHEM, 1925, OFF TENT METH AN COM, P535
- [5] Culpepper CW, 1924, J AGRIC RES, V28, P0403
- [6] CULPEPPER CW, 1926, J AGR RES, V33, P1043
- [7] ECKERSON SH, UNPUB MICROCHEMISTRY, P30
- [9] GUIGNARD ML, 1901, J BOT, V15, P37
- [10] HOPKINS CG, 1903, ILL AGR EXP STA B, V87