Dempsey, Michael W. The ages of the earth; : foundations of palaeogeography and palaeontology [electronic resource] / [by] Michael Dempsey [and] David Larkin.. — London, : S. Low, Marston; distributed in the U.S.A. by Ginn, Boston, [1966]. — 128 p. : col. illus., col. maps. 27 cm. — (Foundations of science library. The natural world).
"Assembles ... material from 'Understanding science' on one subject."