Barnes-Svarney, Patricia L.
Clocks in the rocks : learning about earth's past / Patricia L. Barnes-Svarney. - Hillside, N.J., U.S.A. : Enslow, 1990. - 64 p. : ill. - An Earth processes book .
Includes bibliographical references.
Discusses the divisions of time geologists use to record Earth's history and includes information on fossils, radioactive dating, and prehistoric life.
89007698
Geology.
551.7
Clocks in the rocks : learning about earth's past / Patricia L. Barnes-Svarney. - Hillside, N.J., U.S.A. : Enslow, 1990. - 64 p. : ill. - An Earth processes book .
Includes bibliographical references.
Discusses the divisions of time geologists use to record Earth's history and includes information on fossils, radioactive dating, and prehistoric life.
89007698
Geology.
551.7