Dobson, Edward A Rudimentary Treatise On Masonry and Stonecutting: In Which the Principles of Masonic Projection and Their Application to the Construction of Curved ... and Gothic Vaulting Are Concisely Explained
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A Rudimentary Treatise On Masonry and Stonecutting: In Which the Principles of Masonic Projection and Their Application to the Construction of Curved ... and Gothic Vaulting Are Concisely Explained