000			00496nam a22002057a 4500
015			_a2052
041			_a1
080			_a631.45 _bKOH
100			_aKohnke, H.
100			_aBertrand, A. R.
245			_aSoil Conservation
260			_aMcgraw-HILL BOOK COMPANY _bLondon _c1959
300			_a298p. _bfig., table, chart, ill.
650			_aAgriculture
852			_a4L-4-2
999			_c4065 _d4065