http://www.gutenberg.org/ebooks/subject/37818.opds 2024-11-07T19:39:34Z Books about Gums and resins industry (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-07T19:39:34Z https://sendtokindle.compellingsciencefiction.com/ebooks/68224.opds Synthetic resins and their raw materials United States Tariff Commission