TY  - BOOK
AU  - Parker, Steve.
TI  - Tunnels are round and other questions about building
SN  - 0 753405229
AV  - 0 30 
CY  - Danbury, Connecticut : 
KW  - Buildings
KW  - Earthmoving machinery --
KW  - Earthmoving machinery
KW  - Structural engineering --
KW  - Structural engineering
KW  - Juvenile literature
N1  - Includes index
ER  -