TY - BOOK AU - Kaar, Paul H. AU - Mattock, Alan H., coaut. TI - High strength Bars as concrete reinforcement part 4: contro-l of cracking / by Paul H. Kaar and Alan H. Mattock CY - Skokie, Illinois : atories, Development Department N1 - "Reprinted from the Journal of the PCA Research and Develop-ment Department Laboratories, Vol. 5 No. 1, 15-38 (January - 1963)." ER -