000 | 00342nam a2200133Ia 4500 | ||
---|---|---|---|
008 | 130223s9999 xx 000 0 und d | ||
100 | _aJohnson, M.W. | ||
245 | _a1969 Pennsylvania corn performance studies | ||
260 | _aPennsylvania | ||
260 | _c1970 | ||
440 | _aNo. 304; Pennsylvania Agricult | ||
901 | _pS17579 | ||
942 |
_cB _2udc |
||
999 |
_c151593 _d151593 |