Dover Art Instruction Ser.: Pen and Pencil Drawing Techniques by Harry Borgman (2002, Trade Paperback) for sale online | eBay
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The Pen and Pencil Technique Book by Harry Borgman Circa 1984 - Etsy
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Pen and Pencil Drawing Techniques (Dover Art Instruction): Harry Borgman: 9780486418018: Amazon.com: Books
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Barnes & Noble Framed Drawing Techniques - Mastering Ballpoint Pen, Graphite Pencil, and Digital tools for Visual Storytelling by Marcos Mateu-Mestre | Dulles Town Center