| 000 | 00354nam a2200121Ia 4500 | ||
|---|---|---|---|
| 001 | MPKV052666 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 082 | _a630 | ||
| 245 |
_aCanadian Journal of Research Vol 20 A _c; |
||
| 246 | _aCanadian Journal of Research Vol 20 A | ||
| 260 |
_aCanada _bNational Research Council of Canada _c1942 |
||
| 650 | _aAgronomy | ||
| 999 |
_c50666 _d50666 |
||