Izmeriteli urovni︠a︡ zvukovykh signalov /
Nikonov, A. V.(Aleksandr Vasilʹevich)
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Papernov, Lev Zakharovich.
Moskva : "Radio i svi︠a︡zʹ,"
1981.
Bibliography: p. 111-[112]
John and Ljubica Erickson collection.
Sound