000 00307nam a2200109Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aGraber, L. F.
245 0 _aAgronomy, Principles and Practices
260 _bWm. C. Brown Book Co.
_aIowa
_c1954
942 _c1
999 _c48126
_d48126