共 10 条
- [1] ALDRICH WW, UNPUB J AGR RES
- [2] ALDRICH WW, 1932, AM SOC HORT SCI P, V29, P181
- [3] BECKETT SH, 1930, CALIFORNIA AGR EXP S, V489
- [4] HENDRICKSON AH, 1929, CALIFORNIA AGR EXP S, V479
- [5] SEKERA F, 1933, ERNAHRUNG PFLANZE, V29, P6
- [6] STEPHENSON E, 1932, J AM SOC AGR, V24, P167
- [7] STRAHORN AT, 1913, SOIL SURVE MEDFORD A
- [8] WORK RA, 1933, AGR ENG, V15, P355
- [9] WORK RA, 1930, UNPUB
- [10] WORK RA, 1931, UNPUB