Whewell, William, 1794-1866. William Whewell's theory of scientific method/ Edited with an introd. by Robert E. Butts. - [Pittsburgh]: University of Pittsburgh Press, [c1968]. - ix, 358 p.: 24 cm. Includes bibliographical references. Subjects--Topical Terms: Science--Philosophy.Science--Methodology. LC Class. No.: Q175 / .W567 1968 Dewey Class. No.: 501