000 00522nam a2200145Ia 45e0
008 181001s1977 xx 000 0 und d
100 _aHunt Donnell
245 0 _aFarm power and machinery management
260 _bIOWA, Univ.
_c1977
300 _a365
942 _2ddc
_cBK
999 _c3109
_d3109