| 000 | nam a22 4500 | ||
|---|---|---|---|
| 020 | _a | ||
| 110 | _aSummer, Joseph B. and Anderson Susan S. | ||
| 245 | _aToxic substances agricultural water supply and drainage defining the problems. | ||
| 260 |
_aColorado _bUnited States committee on irrlgation and dralnage. _c1986 |
||
| 942 | _c22 | ||
| 999 |
_c6577 _d6577 |
||