Delzell, J. R., & Towsend, G. (1959). Concrete block construction for home and farm (2a ed.). American technical society.
Cita Chicago Style (17a ed.)Delzell, James Ralph, y Gilbert Towsend. Concrete Block Construction for Home and Farm. 2a ed. Chicago: American technical society, 1959.
Cita MLA (9a ed.)Delzell, James Ralph, y Gilbert Towsend. Concrete Block Construction for Home and Farm. 2a ed. American technical society, 1959.
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