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Amazon.com: Stillman & Birn Zeta Series Softcover Sketchbook, 7.5" x 7.5", 270 GSM (Extra Heavyweight), White Paper, Smooth Surface : Arts, Crafts & Sewing
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Amazon.com: Stillman & Birn Zeta Series Softcover Sketchbook, 5.5" x 8.5", 270 GSM (Extra Heavyweight), White Paper, Smooth Surface : Arts, Crafts & Sewing
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Amazon.com: Stillman & Birn Zeta Series Hardbound Sketchbook, A4 (8.25" x 11.75"), 270 GSM (Extra Heavyweight), White Paper, Smooth Surface : Arts, Crafts & Sewing
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