000 00383nam a2200121Ia 4500
001 MPKV052828
008 120911s9999 xx 000 0 und d
082 _a630
245 _aJournal of the Association of Official Agricultural Chemists Vol 20
_c;
246 _aJournal of the Association of Official Agricultural Chemists Vol 20
260 _aUSA
_bA O A C
_c1937
650 _aAgronomy
999 _c50828
_d50828