| 000 | 00481nam a2200157 i 4500 | ||
|---|---|---|---|
| 001 | 2000005511 | ||
| 005 | 20190411095702.0 | ||
| 007 | t | ||
| 008 | 140922s1984 usa 00010 eng d | ||
| 020 | _a0898672848 | ||
| 100 | 1 | 0 |
_aHelweg, Otto J. _93199 |
| 245 | 1 | 0 |
_aImproving well and pump efficiency _cOtto J. Helweg, Verne H. Scott, Joseph C. Scalmanini |
| 260 | 0 |
_aDenver _bAmerican Water Works Association _c1984 |
|
| 300 |
_a158 p. _bil. n. _c23 cm |
||
| 653 | _aIngenieria hidraulica | ||
| 999 |
_c2889 _d2889 |
||