I︠U︡. A. Isakov

Geografii︠a︡ resursov vodoplavai︠...

Geografii︠a︡ resursov vodoplavai︠u︡shchikh ptits v SSSR, sostoi︠a︡nie zapasov, puti ikh vosproizvodstva i pravil'nogo ispol'zovanii︠a︡

Year unknown

Geterotrofy v ėkosistemakh T︠S︡en...

Geterotrofy v ėkosistemakh T︠S︡entralʹnoĭ lesostepi =

Year unknown I︠U︡. A. Isakov, R. I. Zlotin, and K. S. Khodashova

Opyt raboty i zadachi zapovedniko...

Opyt raboty i zadachi zapovednikov SSSR

Year unknown A. A. Nasimovich and I︠U︡. A. Isakov

Organizat︠s︡ii︠a︡ ėkosistem elʹni...

Organizat︠s︡ii︠a︡ ėkosistem elʹnikov i︠u︡zhnoĭ taĭgi

Year unknown I︠U︡. A. Isakov and Natalʹi͡a Ivanovna Bazilevich

Peset︠s︡, lisit︠s︡a, enotovidnai︠...

Peset︠s︡, lisit︠s︡a, enotovidnai︠a︡ sobaka

Year unknown A. A. Nasimovich and I︠U︡. A. Isakov

Proceedings

Proceedings

Year unknown I︠U︡. A. Isakov, I͡U. A. Isakov, and International Regional Meeting on Conservation of Wildfowl Resources (Europe, Western Asia, Northern and Tropical Africa) (1968 Leningrad)

Resursy vodoplavai︠u︡shcheĭ dichi...

Resursy vodoplavai︠u︡shcheĭ dichi v SSSR i ikh vosproizvodstvo

Year unknown

Resursy vodoplavai︠u︡shchikh ptit...

Resursy vodoplavai︠u︡shchikh ptit︠s︡ SSSR, ikh vosproizvodstvo i ispolʹzovanie

Year unknown

Struktura i funkt︠s︡ionalʹnobioge...

Struktura i funkt︠s︡ionalʹnobiogeot︠s︡enoticheskai︠a︡ rol ́zhivotnogo naselenii︠a︡ sushi

Year unknown

Surki--biot︠s︡enoticheskoe i prak...

Surki--biot︠s︡enoticheskoe i prakticheskoe znachenie

Year unknown R. P. Zimina and I︠U︡. A. Isakov

Waterfowl resources of the U.S.S....

Waterfowl resources of the U.S.S.R. and their development =

Year unknown

Zhivotnoe naselenie Moskvy i Podm...

Zhivotnoe naselenie Moskvy i Podmoskovʹi︠a︡, ego izuchenie, okhrana i napravlennoe preobrazovanie

Year unknown I︠U︡. A. Isakov, Moskovskoe obshchestvo ispytateleĭ prirody, and Institut geografii (Akademii︠a︡ nauk SSSR)