| [1] |
.
[J]. Journal of Northern Agriculture, 2000, (4): 14-14.
|
| [2] |
.
[J]. Journal of Northern Agriculture, 1998, (S1): 168-168.
|
| [3] |
.
[J]. Journal of Northern Agriculture, 1998, (S1): 163-163.
|
| [4] |
.
[J]. Journal of Northern Agriculture, 1998, (5): 27-27.
|
