000 00336nam a2200133Ia 4500
008 231217s9999 xx 000 0 und d
041 _aEnglish
082 _a631.1
_bR73 I
100 _aRoss,Robert c.
245 3 _aAn Introduction to agricultural economics
260 _aNew york
_bMcGraw Hill Book
_c1951
300 _a414
942 _cBK
999 _c4604
_d4604