000 00349nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aHoffman, A.H., McKibben, E.G.
245 _aSubstitutes for wooden breakpins
260 _aCalifornia
_c1929
300 _a1-22 p.
440 _aCalifornia Agricultural Exper
901 _a18111
942 _cB
_2udc
999 _c2119
_d2119