TY  - BOOK
AU  - Wolf, Thomas L.
AU  - Windall, Sheila E.
TI  - EFFECT OF TIP VORTEX STRUCTURE OF HELICOPTER NOISE DUE TO BLADE
U1  - 629.1323 
PY  - 1978///
CY  - Massachusetts
PB  - Institute Of Technology
KW  - Aerodynamic Noise
KW  - Helicopters
KW  - Vortex-Motion
ER  -