000			00353nam a2200133Ia 4500
008			151015s9999 xx 000 0 und d
020			_a9251001138
100			_aWierer, K. ; Abbott, J. C.
245			_aFertilizer marketing
260			_c1978
300			_axvi 156p.
500			_aFAO economic and social development series no- 12
942			_cFAO _2udc
999			_c24473 _d24473