| 000 | 00398nam a2200121Ia 4500 | ||
|---|---|---|---|
| 001 | MPKV059114 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 082 | _a630 | ||
| 245 |
_aProceedings of the National Academy of Sciences Vol.67 _c; |
||
| 246 | _aProceedings of the National Academy of Sciences Vol.67 | ||
| 260 |
_aUSA _bNational Academy of Science _c1970 |
||
| 650 | _aAgronomy/General Agricultural | ||
| 999 |
_c57102 _d57102 |
||