TY  - BOOK
AU  - Janney, Jack R.
AU  - Hognestad, Eivind, coaut.McHenry, Douglas, coaut.
TI  - Ultimate flexural strength of prestressed and conventionall-y reinforced concrete beams / by Jack R. Janney, Eivind Hog-nestad and Douglas Mc Henry
CY  - Skokie, Illinois : atories, Development Department
N1  - "Authorized reprint from copyrighted Journal of the America-n Concrete Institute January 1956, Proceedings Vol. 52, p. - 601"
ER  -