000 00334nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aMcbirney, S.W.
245 _aSugar beet blocking by machinery
260 _aWashington
_c1943
300 _a1-83 p.
440 _aUnited States Department of A
901 _a14026
942 _cB
_2udc
999 _c1855
_d1855