 | Concrete walls. | (2) |
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 | Construction with surface bonding / . Haynes, B. C. (B. Carl) 4n Washington, D.C. : U.S. Dept. of Agriculture, Agriculture Rsearch Service, 1974. | |
| Surface bonding of concrete blocks : a technique for erecting block walls without mortar joints / . Simons, Joseph Winslow, 1908- 2n Washington, D.C. : U.S. Dept. of Agriculture, 1970. | |
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