Cowan, Henry J. Reinforced and prestressed concrete in torsion / Henry J. Cowan. and With a chapter by Igor M. Lyalin. - New York : St. Martin's Press, c1965. - x, 138 p. ill. ; 23 cm. Includes Index . Bibliography: p. (110-124). english LCCN: 65022626 Subjects--Topical Terms: Reinforced concrete.Prestressed concrete.Torsion. LC Class. No.: TA444 / .C65 Dewey Class. No.: 620.137/COR