000 00389nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aChristensen, R.P., Mighell, R.
245 _aCompetitive position of chicken and egg production in the United States
260 _aWashington
_c1950
300 _a1-58 p.
440 _aUnited States Department of A
901 _a29923
942 _cB
_2udc
999 _c5857
_d5857