000 00298 a2200121 4500
080 _a63
_bD 917 I
245 1 _aIntroduction to agronomy
_cby R.S. Dunham
260 _aNew York
_bHolt, Rinehart & Winston
_c1957
650 _aAgronomy
100 1 _aDunham, R.S.
_d
300 _a324 p.
901 _a86721
999 _c40595
_d40595