000 00378nam a2200121Ia 4500
001 MPKV054841
008 120911s9999 xx 000 0 und d
082 _a630
245 _aCanadian Journal of Research Vol 26 (A,B,C,D,E,F)
_c;
246 _aCanadian Journal of Research Vol 26 (A,B,C,D,E,F)
260 _aCanada
_bNational Research Council of Canada
_c1948
650 _aAgronomy
999 _c52838
_d52838