共 12 条
- [1] BOYD AEW, 1947, ANN APPL BIOL, V34, P634
- [2] FOISTER CE, 1943, AGRICULTURE, V50, P300
- [3] LANSADE M., 1949, BULL TECH INFORM INGENIEURS SERV AGRIC, V41, P419
- [5] MOOI J. C., 1950, Landbouwkundig Tijdschrift, V62, P712
- [6] PETHYBRIDGE GH, 1917, ANN GEN REP DEP AGR, V17, P601
- [7] PETHYBRIDGE GH, 1908, EC P R DUBLIN SOC, V1, P547
- [8] PETHYBRIDGE GH, 1917, SCI P R DUBLIN SOC, V15, P193