000 00308nam a2200109Ia 4500
008 140113s9999 xx 000 0 und d
100 _a"Kilmer, V.J., Younts, S.E. & Brady, N.C."
245 _aThe Role of Potassium in Agriculture
260 _a1968
_b"ASA, CSSA,& SSSA"
_cU.S.A.
300 _a509
942 _cBK
999 _c58332
_d58332