TY  - BOOK
AU  - Henn, Raymond.W. 
TI  - AUA Guidelines for Backfilling and Contact Grouting of Tunnels and Shafts
SN  - 9780727729835
U1  - 624.19 
PY  - 2003///.,
CY  - N.Y
PB  - Thomas Telford Publishing, 
ER  -