00370nam a2200121Ia 4500082002300000100006500023245006300088260003000151300000900181490004800190500000500238700000500243  a338.16318bUn58.RS  aUnited Nations. Industrial Development Organisation, Vienna.  aThe reduction of sulphur needs in fertilizer manufactureb  aNew YorkbThe Auth.c1969  a61p.  aFertilizer industry seriesv monograph no.3  a  a