http://book.klll.cc/ebooks/author/43919.opds 2025-11-18T15:45:34Z Books by Chen, Yü-Gwan Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-18T15:45:34Z https://book.klll.cc/ebooks/46714.opds Synthesis of 2-methyl-4-selenoquinazolone, 2-phenylbenzoselenazole, and its derivatives Yü-Gwan Chen