| 000 | 00349cam a22000977a 4500 | ||
|---|---|---|---|
| 008 | 180718b1970 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aX91x73 Un3m | ||
| 245 | _aManpower and traning needs for air pollution control : report of the secretary of health, education, and welfare | ||
| 260 |
_aWashington _bGovernemnt Printing Office _c1970 |
||
| 300 | _a44+p. | ||
| 999 |
_c498883 _d498883 |
||