000			00436nam a2200157Ia 4500
008			140208s9999 xx 000 0 und d
044			_aU.S.A.
080			_a631.5 C24C
100			_aCox, Joseph F.
245			_aCrop management and soil conservation _cJoseph F. Cox and Lyman D. Jackson
250			_a2nd ed.
260			_bJohn Wiley _aNew York _c1948
300			_axxii, 572 p.; 21cm.
700			_aJackson, Lyman E.
942			_2udc _cGB
999			_c607 _d607