TY  - BOOK
AU  - Williams,John
AU  - Walker,Malcolm S.
AU  - Williams,John
TI  - Projects with machines
T2  - Simple science projects
SN  - 0836807693
AV  - TJ147 .W52 1992
U1  - 621.8/078 20
PY  - 1992///
CY  - Milwaukee
PB  - Gareth Stevens Children's Books
KW  - Machinery
KW  - Experiments
N1  - Originally published as: Machines. Great Britain : Wayland, c1991; Includes bibliographical references (p. 29) and index
N2  - Provides instructions for making and using a variety of machines, including levers, diggers, cranes, and pulleys
ER  -