共 10 条
- [1] ATKINSON HJ, 1958, 169 CAN DEPT AGR CHE
- [2] CANNON HB, PERSONAL COMMUNICATI
- [3] DUBETZ S., 1955, CANADA JOUR AGRIC SCI, V35, P564
- [4] GARDNER R, 1954, 51 COL AGR EXPT STA
- [5] HILL K. W., 1951, SCI AGR, V31, P349
- [6] HOPKINS ES, 1945, SOIL SCI SOC AM P, V10, P295
- [7] LARSON WE, 1958, 535 MONT AGR EXPT ST
- [10] PATRICK ZA, 1963, PHYTOPATHOLOGY, V53, P152