000 00354nam a2200121Ia 4500
001 MPKV052646
008 120911s9999 xx 000 0 und d
082 _a630
245 _aCanadian Journal of Research Vol 14 D
_c;
246 _aCanadian Journal of Research Vol 14 D
260 _aCanada
_bNational Research Council of Canada
_c1936
650 _aAgronomy
999 _c50646
_d50646