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Amazon.com: Stillman & Birn Zeta Series Softcover Sketchbook, 8.5" x 5.5", 270 gsm (Extra Heavyweight), White Paper, Smooth Surface : Arts, Crafts & Sewing
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Stillman & Birn Beta Series Softcover Sketchbook, 5.5" x 8.5", 270 gsm (Extra Heavyweight), White Paper, Cold Press Surface : Arts, Crafts & Sewing - Amazon.com
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Stillman & Birn Alpha Series Softcover Sketchbook, 7.5" x 7.5", 150 gsm (Heavyweight), White Paper, Medium Grain Surface : Arts, Crafts & Sewing - Amazon.com
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Stillman & Birn Softcover Sketchbook Alpha Series 150g 7.5x7.5" Square - Wet Paint Artists' Materials and Framing
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