TY  - BOOK
AU  - Jennings,Terry
TI  - How building machines work
T2  - How things work
SN  - 0862729246
U1  - 629.23 
PY  - 1992///
CY  - London
PB  - Kingfisher
N2  - Investigates, in text and labelled diagrams and illustrations, the functions of various kinds of building machines and how they work. Includes instructions for related projects and experiments
ER  -