Marshall, John, 1944-

Working machines / John Marshall. - Vero Beach, Fla. : Rourke Book Co., 1995. - p. cm. - Energy and action .

Includes index.

Describes simple machines and how they work, including the inclined plane, levers, wheels and axles, the wedge, screws, and pulleys.

ISBN: 1559161558

LCCN: 95016003 /AC

Subjects--Topical Terms:
Machinery--Juvenile literature.
Machinery.
Simple machines.

LC Class. No.: TJ147 / .M32 1995

Dewey Class. No.: 621.8