| 000 | nam a22 4500 | ||
|---|---|---|---|
| 020 | _a | ||
| 110 | _aSummer, Joseph B. and Anderson, Susan S. | ||
| 245 | _aToxic substances in agricultural water supply and drainage an international environmental perspective | ||
| 260 |
_aOttawa _bU.S.committee on irrigationand drainage _c1989 |
||
| 942 | _c22 | ||
| 999 |
_c6579 _d6579 |
||