000 00317nam a2200121Ia 4500
008 130223s9999 xx 000 0 und d
100 _aJohnson, M.W.
245 _a1966 Pennsylvania commercial hybrid corn tests
260 _c1967
440 _aNo. 270; Pennsylvania Agricult
901 _pS15206
942 _cB
_2udc
999 _c151561
_d151561