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Cilt sonuçları
Problemy pitʹevogo vodosnabzhenii︠a︡ i ėkologii
Umarov, U. doktor tekhnicheskikh nauk, Kh. A. Toĭchiev · "Universitet"
290 sayfa · 2002
Water resources development / Ecology / Water-supply / Environmental conditions
Vodnye resursy, problema Arala i okruzhai︠u︡shchai︠a︡ sreda
Umarov, U. doktor tekhnicheskikh nauk, A. Kh Karimov · "Universitet"
398 sayfa · 2000
Lake ecology / Water-supply / Environmental degradation
Russkiĭ i︠a︡zyk v Karakalpakstane
A. U. Umarov, Karakalpakskiĭ gosudarstvennyĭ universitet im. Berdakha · "Bilim"
16 sayfa · 1997
Russian language / Study and teaching