Short description: In Russian. Ptukha, Mikhail Vasilievich. Essays on population statistics and moral theory. Petrograd: type. M.P. Frolova (Vlad A. E. Collins), 1916. Ocherki po teorii statistiki naseleniya i moral'noy. In Russian /Essays on population statistics and moral theory. The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU4212998