| 载体形态 |
v. ill. 24 cm. |
| Frequency |
12 issues yearly, <1987-> |
|
Quarterly, Jan. 1976-<Oct. 1977> |
|
12 issues yearly, <1985>-1986. |
|
16 issues yearly, 1986. |
| Publication Date |
v. 1- Jan. 1976- |
| Notes |
Issued in 3 v., 4 issues per v., <v. 16, no. 1 (1985)>-v. 21, no. 1 (1986); 4 v., 4 issues per v., v. 21, no. 2 (1986)-<v. 22, no. 4 (1986)>; 3 v., 4 issues per v., <v. 23, no. 2 (1987)-> |
| 主题 |
Agricultural systems -- Periodicals.
|
| Genre |
Electronic journals.
|
| 其它责任者 |
ScienceDirect (Online service)
|
| Key Title |
Agric. syst.
|
|
Agricultural systems. |
| Absorbed |
Agricultural administration and extension 1989 |
|
Research and development in agriculture 1989 |
| 国际标准期刊编号 |
0308-521X |
|
