Manual for the Corps of Engineers. Subversive works (PR-50). In Russian /Nastavlenie dlya inzhenernykh voysk. Podryvnye raboty (PR-50). M. Voenizdat 1953. 260s. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalb20887773c4939097.