Royston, Angela.

Pulleys and gears/ Angela Royston. - Chicago : Heinemann Library, c2001. - 32 p. : col. ill. ; 27 cm. - Machines in action .

Includes bibliographical references and index.

ISBN: 1575723204 (library)

LCCN: 00029593

Subjects--Topical Terms:
Pulleys.
Gearing.

LC Class. No.: TJ1103 / .R69 2001

Dewey Class. No.: 621.8/33