Armentrout, Patricia, 1960-

The pulley / Patricia Armentrout. - Vero Beach, Fla. : Rourke Press, c1997. - 24 p. : col. ill. ; 26 cm. - Simple devices . - Armentrout, Patricia, 1960- Simple devices. .

Includes index.

Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.

ISBN: 1571031782

LCCN: 97015148 /AC

Subjects--Topical Terms:
Pulleys.

LC Class. No.: TJ1103 / .A76 1997

Dewey Class. No.: 621.8/11