00890nam0-2200313---450 99000972008040332120181018093848.0000972008FED01000972008(Aleph)000972008FED0120130422d1941----km-y0itay50------baengUSa-------001yyPractical tunnel drivingby Harold W. Richardson and Robert S. MayoNew York ; LondonMc Graw Hill book company1941XVIII,436 p.ill.24 cmGallerieRichardson,Harold W.519850Mayo,Robert S.168805ITUNINARICAUNIMARCBK990009720080403321N5/44s.i.DINGEN7/112280DINTRDINGEDINTRPractical tunnel driving842059UNINA