TY  - BOOK
AU  - Livingston, A. R.
AU  - Mangotich, Edward, coaut.Dikkers, Robert, coaut.
ED  - Iowa State College (Estados Unidos).
TI  - Flexural strength of hollow unit concrete masonry walls in -the horizontal span / by A. R. Livingston, Edward Manyotich- and Robert Dikkers
CY  - Ames, Iowa : Iowa State College
ER  -