000			00410nam a2200145Ia 4500
008			140208s9999 xx 000 0 und d
044			_aU.S.A.
080			_a631.8 C691C5
100			_aCollings, Gilbert H.
245			_aCommercial fertilizers : their sources and use _cGilbert H. Collings
250			_a5th ed.
260			_bMcGraw-Hill Book _aNew York _c1955
300			_axi, 617 p.; 24cm.
942			_2udc _cGB
999			_c3302 _d3302