Congress of the international council of aeronautical sciences,Technical Information Service,Congress of the international council of aeronautical sciences.Congress of the international council of aeronautical sciences (8th : 1972 : N. Y.).s. n.,1972.
Congress of the international council of aeronautical sciences (8th : 1972 : N. Y.)
Congress of the international council of aeronautical sciences,Technical Information Service,Congress of the international council of aeronautical sciences.s. n.,1972.
