Osnovy letnoĭ ėkspluatat︠s︡ii vertoletov : dinamika poleta /
Volodko, A. M.(Aleksandr Mikhaĭlovich)
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Moskva : "Transport",
1986.
Bibliography: p. [262]
John and Ljubica Erickson collection.
Helicopters