Ethical free building background

Pokrovsky, Joseph Alekseevich (1868-1920).Ethical background of free system: lecture, cheat.On courses for drug training.lecturers in mosk.com.In-t / prof.I. Pokrovsky.- Moscow: Cult.-Light.Bureau of students Mosk.commerce.In-Ta, 1917. -16 p.;23 See - (Scientific and Popular Library; No. 1).1. Power (collection).Electronic Source: PBOriginal Storage Place: SPbSU