{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The half-tone process: A practical manual of photo-engraving in half-tone on zinc, copper, and brass. With a chapter on three-colour work","author_name":"Julius Verfasser","thumbnail_url":"https://www.ebooknetworking.net/books/B00/39N/bigB0039NMG1Q.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0039NMG1Q.html\">The half-tone process: A practical manual of photo-engraving in half-tone on zinc, copper, and brass. With a chapter on three-colour work</a>","width":400,"height":300}