Ingersoll, L. R. 1880- An introduction to the mathematical theory of heat conduction : with engineering and geological applications / by L. R. Ingersoll and O. J. Zobel - Boston : Ginn, c1913 - vi, 171 p. ; 22 cm. Includes index Subjects--Topical Terms: Heat--Conduction Dewey Class. No.: 536.23