| 000 | 00359pam a2200133a 44500 | ||
|---|---|---|---|
| 082 |
_aNASA _bCR-2142 |
||
| 100 | _aWebb,H M | ||
| 245 | 1 | _aSTUDY OF LOW-DENSITY AIR TRANSPORTATION CONCEPTS | |
| 260 |
_a _bNasa, Washington, D.C. _c1972 |
||
| 300 | _a55 | ||
| 500 | _aBound With Nasa Cr-2141, 2143-2149. Lack No. 2144 | ||
| 964 | _gCIRC | ||
| 997 | _aTR11875 C | ||
| 999 |
_c396907 _d396907 |
||