Normirovanie i snizhenie shuma samoletov i vertoletov /
Kvitka, V. E.
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Melʹnikov, B. N.(Boris Nikolaevich)
Tokarev, V. I.(Vadim Ivanovich)
Kiev : Gol. izd-vo izdatelʹskogo obʺedinenii︠a︡ "Vyshcha shkola",
1980.
Bibliography: p. 196-[206].
John and Ljubica Erickson collection.
Airplanes
Helicopters