How to encrypt and secure information - very heavy mathematical models.

Pyotr Alekseevich Kropotkin (1842-1921) is an amazing, but in some ways very typical figure in Russian history: a prince from an old family who became a revolutionary, a scholar and encyclopedist immersed in politics, an anarchist who sharply criticized violence and the ‘Red Terror’. He became famous as a geographer and explorer of the North, a historian and philosopher, a literary critic and...

The author of this book, twice Hero of the Soviet Union Kirill Alekseevich Evstigneev, made 296 combat sorties during the Great Patriotic War, achieving 53 victories personally and another 3 in a group (this is the fifth best result in Soviet aviation; only Kozhedub, Pokryshkin, Gulaev, and Rechkalov shot down more enemy aircraft).

A biographical dictionary of the main figures in Russian history.

The assasination of Archduke Franz Ferdinand in Sarajevo started a chain of events that led to the beginning of World War One. It lis less clear, in the eyes of the author, as to why security was minimal for the Archduke, how dangerous was the 'Black Hand' organization and who stood to benefit from the destruction of the old man of Europe?

Spanish language!

Detailed descriptions, drawings of the new and interesting projects for your garden, or front yard. Book contains suggestions on organization of the stone garden, and the selection of plants according to their blooming period, ability to resist cold weather, and overall growth conditions.

The book, based on extensive factual material provides a comparative analysis of the organizational structure and tactics of the German and Soviet attack aircraft in 1941-1945., And adopted them in systems of rewarding pilots. Particular attention is given to the two planes: the German Ju-87 and the Soviet Il-2. became during the Second World War is truly legendary.