| 000 | 00626 a2200241 4500 | ||
|---|---|---|---|
| 001 | 265756 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _aLNASA TP 2748 : 1987 | ||
| 245 | _aEvaluation of a scale-model experiment to investigate long-range acoustic propagation | ||
| 250 | _a | ||
| 260 | _aWashington, D.C. | ||
| 260 | _bNational Aeronautics and Space Adminstration (NASA) | ||
| 260 | _c1987 | ||
| 300 | _a54 p. | ||
| 300 | _c | ||
| 856 | _u | ||
| 490 | _aNASA TP 2748 : 1987 | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _aAcoustic propagation, Scale model, Long range, Grazing incidence, Excess attenuation | ||
| 942 | _cPP | ||
| 942 | _2UDC | ||
| 999 |
_c218515 _d218515 |
||