000			00324nam a2200133Ia 4500
008			140317s9999 xx 000 0 und d
082			_a631.5
100			_aMartin,John H.
245			_aPrinciples of field crop production. 3rd ed.
260			_aNY _bMacmillan _c1976
300			_a1118
700			_aOthers
942			_2ddc _cBK
999			_c7623 _d7623