| 000 | 00426nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 220721s1987 xx 000 0 und d | ||
| 041 | _aeng | ||
| 082 | _a584.15(54) | ||
| 100 | _aNichols, James D. | ||
| 245 | _aPopulation Ecoligy of the Mallard: Winter Distribution Pattern and Survival Rates of Winter-Banded Mallards | ||
| 260 |
_aWashington Dc _bUs Department Of Interior _c1987 |
||
| 300 | _a154P. | ||
| 999 |
_c80368 _d80368 |
||