000 00493nam a2200169Ia 4500
008 170901s1981 xx 000 0 und d
082 _a631
_bI-5A
100 _aProceedings
245 0 _aAgricultural Yield Potentials in Continental Climates
260 _aSwitzerland
_bInternational Potash Institute
_c1981
300 _a295
650 _aAgriculture and related technologies
650 _aTechnology (Applied sciences)
653 _aAgriculture
653 _aClimate
942 _2ddc
_cBK
999 _c12821
_d12821