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Stillman & Birn Gamma Series Hardbound Sketchbook, 4" x 6", 150 GSM (Heavyweight), Ivory Paper, Medium Grain Surface : Amazon.co.uk: Home & Kitchen
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Stillman & Birn Zeta Series Softcover Sketchbook, 8" x 10", 270 GSM (Extra Heavyweight), White Paper, Smooth Surface : Amazon.co.uk: Home & Kitchen
Stillman & Birn : Gamma Softcover Sketchbook : 150gsm : Med Grain : 5.5x8.5in (22x14cm) : Portrait | Jackson's Art Supplies
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