000 00336nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aRhoades, M.M., Robinson, J.L.
245 _a1936 Iowa corn yield test
260 _aAmes
_c1937
300 _a185-296 p.
440 _aIowa Agricultural Economics S
901 _a2159
942 _cB
_2udc
999 _c454
_d454