000 00310nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aReed, I.F.
245 _aDisk plows
260 _aWashington
_c1958
300 _a1-20 p.
440 _aUnited States Department of A
901 _a58769
942 _cB
_2udc
999 _c10033
_d10033