Proprietary trench support systems
MacKay, E.B.
Proprietary trench support systems - 3rd ed. - London Construction Industry Research and Infor 1986 - 26p. : ill. ; 30cm. - CIRIA Technical Note 95 .
0860172643
EXCAVATIONS
SUPPORT SYSTEMS
TRENCHES
624.152
Proprietary trench support systems - 3rd ed. - London Construction Industry Research and Infor 1986 - 26p. : ill. ; 30cm. - CIRIA Technical Note 95 .
0860172643
EXCAVATIONS
SUPPORT SYSTEMS
TRENCHES
624.152