| 000 | 00580 a2200241 4500 | ||
|---|---|---|---|
| 001 | 305168 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _aLNASA TP - 1004 : 1980 | ||
| 245 | _aEvaluation of approximate methods for the prediction of noise shielding by airframe components | ||
| 250 | _a | ||
| 260 | _aWashington, D.C. | ||
| 260 | _bNational Aeronautics and Space Administration | ||
| 260 | _c1980 | ||
| 300 | _a103 p. | ||
| 300 | _c | ||
| 856 | _u | ||
| 490 | _aNASA TP - 1004 : 1980 | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _aNoise shielding, Noise barrier | ||
| 942 | _cPP | ||
| 942 | _2UDC | ||
| 999 |
_c253702 _d253702 |
||