Barnes-Svarney, Patricia L.

Clocks in the rocks : learning about earth's past / Patricia L. Barnes-Svarney. - Hillside, N.J., U.S.A. : Enslow Publishers, c1990. - 64 p. : ill. ; 24 cm. - An Earth processes book .

Includes index.

Bibliography: p. 62.

Discusses the divisions of time used by geologists to record earth's history and includes information on fossils, radioactive dating, and prehistoric life.

LCCN: 89007698 /AC

Subjects--Topical Terms:
Geological time--Juvenile literature.
Geology.

LC Class. No.: QE508 / .B355 1990

Dewey Class. No.: 551.7