Russkiĭ i︠a︡zyk : uchebnyĭ kompleks dli︠a︡ sistemy vneshkolʹnogo obuchenii︠a︡ v Narodnoĭ Respublike Bolgarii : kniga dli︠a︡ slushateli︠a︡ /

by Kudri︠a︡vt︠s︡eva, T. S (Tatʹi︠a︡na Semenovna), Dimitrova, Stefana Petrova, Stilii︠a︡nova, M. K (Marii︠a︡ Kostadinova)
Published 1987