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Are you Glenn V. Vilppu, author of the books below?
Vilppu Drawing Manual by Glenn V. Vilppu The Vilppu Animal Drawing Manual by Glenn V. Vilppu Figure Drawing Demonstrations Step-By-Step by Glenn V. Vilppu Vilppu Quick Sketch by Glenn V. Vilppu Vilppu sketching on location manual by Glenn V. Vilppu


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