000 00409nam a2200145Ia 4500
008 130223s9999 xx 000 0 und d
100 _aRudel, R.K., Walsh, R.G.
245 _aEffects of vertical integration on profitability of ammoni and solution fertiliz
260 _aNebraska
260 _c1970
300 _a37 p.
440 _aNo. 412; Nebraska Agricultural
901 _pS19645
942 _cB
_2udc
999 _c121295
_d121295