Russia. Komissii͡a o preduprezhdenii zanesenii͡a v imperīi͡u chumnoĭ zarazu

• Po vysochaĭshemu poveli︠e︡nīi︠u︡ komandirovannago v povolzhskīi︠a︡ gubernīi senatora V. Likhacheva vsepoddanni︠e︡ĭskīĭ otchet i Sanitarnoe opisanīe naselennykh mi︠e︡st Povolzhʹi︠a︡