ShaderX4: Advanced Rendering Techniques - Hardcover, by Engel Wolfgang - Good

Shader X6 : Advanced Rendering Techniques by Wolfgang F. Engel

Shader X4: Advanced Rendering Techniques by Wolfgang Engel: Used

Shader X6 : Advanced Rendering Techniques by Wolfgang F. Engel

SHADERX7: ADVANCED RENDERING TECHNIQUES By Wolfgang Engel - With CD

Shader X3 : Advanced Rendering with DirectX & OpenGL by Wolfgang F. Engel

GPU Pro2: Advanced Rendering Techniques by Engel, Wolfgang

GPU Pro 6: Advanced Rendering Techniques - Hardcover, by Engel Wolfgang - Good