Roland Bechmann, About some technical sketches of Villard de Honnecourt's Manuscript. New light on deleted diagrams : an unknown drawing, British Journal of History of Science, 21, 1988 : p. 341-361
Roland Bechmann, About some technical sketches of Villard de Honnecourt's Manuscript. New light on deleted diagrams : an unknown drawing, British Journal of History of Science, 21, 1988 : p. 341-361