00814nam0-2200301---450-99000972071040332120130430095412.0000972071FED01000972071(Aleph)000972071FED0100097207120130422d1973----km-y0itay50------baenghunHUa-------001yy<<The >>art of tunnellingby Karoly Szechy2 nd english ed. rev.and enlargedBudapestAkadémiai Kiado19731097 p.ill.25 cmGallerieSzéchy,Károly345341ITUNINARICAUNIMARCBK990009720710403321N5/5611875DINGEDINGEArt of tunnelling841968UNINA