000 00433 a2200145 4500
082 _a631.41
_bCOO
090 _c21784
_d34028
100 _aCooke, G. W.
245 _aThe role and importance of potassium in the agricultural systems of the humid tropics
_bthe way forward
260 _aBern
_bInternational Potash Institute
_c1986
_g1986
300 _a39p.
_c21cm
650 _aSoil sciences
650 _aSoil chemistry
942 _cL
999 _c49225
_d49225