"Dessin Technique Technique." . . "Proportions (art)." . . . . "Drawing Technique." . . "Dessin Technique." . . "Perspective." . . "Composition (art)." . . . . . . . . . . . "Electronic books"@en . . . . . "The Theory and Practice of Perspective"@en . . . . . "Theory and practice of perspective"@en . "Theory and practice of perspective" . . . . . "The theory and practice of perspective" . "The theory and practice of perspective"@en . . "Theory and Practice of Perspective"@en . "Theory and Practice of Perspective" . . . . . . . "The Theory and Practice of Perspective. [With illustrations.]"@en . . . . .