O. K. Dreĭer

Ecological problems of developing countries

Year unknown O. K. Dreĭer, Oleg Dreyer, Bella Los, and Victor Los

Ekologicheskie problemy razvivai︠...

Ekologicheskie problemy razvivai︠u︡shchikhsi︠a︡ stran

Year unknown

Ėkologicheskie problemy razvivai︠...

Ėkologicheskie problemy razvivai︠u︡shchikhsi︠a︡ stran

Year unknown

Istorii︠a︡ Afriki v drevnikh i sr...

Istorii︠a︡ Afriki v drevnikh i srednevekovykh istochnikakh

Year unknown O. K. Dreĭer, S. I︠A︡ Berzina, and L. E. Kubbelʹ

O kollegakh i tovarishchakh

O kollegakh i tovarishchakh

Year unknown O. K. Dreĭer and Petr Mikhaĭlovich Shastitko

Razvivai︠u︡shchiesi︠a︡ strany i g...

Razvivai︠u︡shchiesi︠a︡ strany i globalʹnye problemy

Year unknown B. V. Losʹ and O. K. Dreĭer

Slovo ob uchiteli︠a︡kh

Slovo ob uchiteli︠a︡kh

Year unknown O. K. Dreĭer, Galina Davydovna Ti︠a︡gaĭ, and Petr Mikhaĭlovich Shastitko