Pytel, Andrew. Strength of materials / Andrew Pytel, Ferdinand L. Singer. - 4th edition. - New York : Harper & Row Publishers, c1987. - xiii, 594 pages : Illustrations ; 24 cm. Includes index. ISBN: 0060453133 LCCN: 86018355 Subjects--Topical Terms: Strength of materials. LC Class. No.: TA405 / .P98 1987 Dewey Class. No.: 620.1/12