  The Gum Bichromate Book Contemporary Methods for Photographic Printmaking (Paperback) ISBN-13: 9780879920104 ISBN-10: 0879920106 Genre: Arts & Photography 1  The Gum Bichromate Book Nonsilver Methods for Photographic Printmaking (Paperback) ISBN-13: 9780240800738 ISBN-10: 0240800737 Genres: Arts & Photography, Science & Math ? |
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