| 000 | 00402nam a2200121 4500 | ||
|---|---|---|---|
| 245 |
_aSelected instructional activities and refence _cby Herbert L. Coon |
||
| 100 | _aCoon, Herbert L. | ||
| 260 |
_aOhio _bNational Training and Operational Technology Center _c1981 |
||
| 300 | _a197p.; 24cm.- | ||
| 490 | _aMonograph series : safety in wastewater treatment system | ||
| 082 |
_a333.91 _bCOO |
||
| 041 | _aeng | ||
| 999 |
_c64473 _d64473 |
||