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Amazon.com: Stillman & Birn Zeta Series Softcover Sketchbook, 3.5" x 5.5", 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
Stillman & Birn : Zeta Softcover Sketchbook : 270gsm : Smooth : 5.5x8.5in (22x14cm) : Portrait | Jackson's Art Supplies
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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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