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'Product Sketchbook : Ideas, Processes and Refinements Selected from 50 Designers 2015'
'Star Product Designers : Prototypes, Products, and Sketches from the World's Top Designers 2013'
© Ryan Jongwoo Choi. All rights reserved.
Sketch
'Product Sketchbook : Ideas, Processes and Refinements Selected from 50 Designers 2015'