1, China hownet. It is also the most commonly used way to input topics or keywords for query, and China HowNet is also the most authoritative and commonly used database in China.
2. Baidu Academic. Baidu has many Chinese documents academically. Baidu Academic Search can retrieve paid and free academic papers, and accurately search by time screening, title, keywords, abstract, author, publication, literature type, and cited times.
3. Wanfang database. Wanfang database is also a large literature database in China, and you can enter corresponding keywords to search.
4.Pubmed website.
English literature retrieval websites include Forgotten Books, Project Gutenberg, World Public Library, OA Resources of Scientific Research Press, Blackwell Electronic Journals, Electronic Journals of HighWire Press, Many Books of Many Books, JustFreeBooks, WitGuides, and Stack of Economic Thought History of McMaster University.
Forgotten books
Forgotten Books is a London-based book publisher specializing in the renovation of old books, including novels and non-fiction works. There are 787,733 books available for online reading, or downloaded as e-books or purchased in writing.
Gutenberg plan
The Gutenberg project is attended by volunteers who are committed to the electronization, archiving and publication of their works. This project is the earliest digital library. Most of these books are original books in the public domain. Project Gutenberg ensures that these books can circulate freely and have an open format, which is conducive to long-term preservation and can be read on various computers.