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| 001 | MPKV111123 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 082 | _a338.1 | ||
| 245 |
_aAgricultural Economics Research vol.33-36-37 Part No.1-4, 1,3-4, 1-2,4 _c; |
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| 246 | _aAgricultural Economics Research vol.1-3 | ||
| 260 |
_aWashingto _bU S D A _c1981,84,85 |
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| 650 | _aAgricultural Economics | ||
| 999 |
_c74426 _d74426 |
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