000			00513nam a2200169Ia 4500
008			140208s9999 xx 000 0 und d
044			_aU.S.A.
080			_a635.217 7 SA17W
100			_aSaffina, P.G.
245			_aWater and nitrogen balance of potatoes grown on irrigated sandy soils _cP.G.Saffigna...[et al.].
260			_bU.S. Department of Commerce _aSpringfield _c1973
300			_aVaries p.; 28cm.
700			_aKeeney, D.R.
700			_aKrikham, M.G.
700			_aTanner, C.B.
942			_2udc _cPB
999			_c10769 _d10769