| 000 | 00532 a2200241 4500 | ||
|---|---|---|---|
| 001 | 252738 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _aLTRB NCHRP : 1991 | ||
| 245 | _aSummary of progress | ||
| 250 | _a | ||
| 260 | _aWashington, D.C. | ||
| 260 | _bNational Aeronautics and Space Adminstration | ||
| 260 | _c1992 | ||
| 300 | _a159 p. | ||
| 300 | _c | ||
| 856 | _u | ||
| 490 | _aTRB NCHRP : 1991 | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _aDiffraction, Head waves, Nonseparable surfaces, Thin shell resonance | ||
| 942 | _cPP | ||
| 942 | _2UDC | ||
| 999 |
_c204381 _d204381 |
||