000			00345nam a2200133Ia 4500
008			140113s9999 xx 000 0 und d
082			_a631.8:633(213) L0
100			_a" De Geus, J. G."
245			_aFertilizer guide for food grains in the tropics and subtropics
260			_b1970
300			_a119p.
650			_aFertilizers
942			_cBK
999			_c64392 _d64392