000 | 00353nam a2200145Ia 4500 | ||
---|---|---|---|
008 | 131111s9999 xx 000 0 und d | ||
100 | _aGrigg, D.B. | ||
245 | _aAgricultural systems of the world;an evolutionary approach | ||
260 | _aLondon | ||
260 | _bCambridge | ||
260 | _c1974 | ||
300 | _a358p. | ||
650 | _aAgriculture | ||
763 | _a14988 | ||
999 |
_c52570 _d52570 |