000 00305nam a2200121Ia 4500
008 170101s1978 xx 000 0 und d
082 _a631.83 SEK
100 _aSekhon G. S.
245 0 _aPotassium in Soils and Crops
260 _bPotach Res. Inst. of Ind.
_c1978
300 _a432 p.
942 _2ddc
_cB
999 _c638516
_d638516