TY  - BOOK
AU  - Litrin, Albert.
AU  - Pfeifer, Donald W., coaut.
TI  - Gap-graded mixes for cast-in place exposed aggregate concre-te / by Albert Litvin and Donald W. Pfeifer
CY  - Skokie, Illinois : atories, Development Department
N1  - "Authorized reprint from copyrighted Journal of the America-n Concrete Institute May, 1965, Proceedings Vol. 62, p. 52l-."
ER  -