共 7 条
- [1] CHAPMAN JA, 1955, CANADIAN DEP AGR SCI, V11, P1
- [2] HOPKINS AD, 1909, 83 US DEP AGR BUR
- [3] HOPKINS AD, 1909, 17 US DEP AGRIC TECH
- [4] JOHNSON NE, PERSONAL COMMUNICATI
- [5] JOHNSON NE, 1960, 29 WEY FOR RES NOT
- [6] LYON R. L., 1958, CANADIAN ENT, V90, P582
- [7] WOOD STEPHEN L., 1963, GREAT BASIN NATUR, V23, P1