Title: NACA mach number warning device for use in flight
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF003804356&ix=nu&I=0&V=D&pm=1" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF003804356&ix=nu&I=0&V=D&pm=1</a>
Subjects: Mach number, Aerodynamics.