Friends in academic libraries, Here is the link to an open access book on the Standard model. Students and teachers of physics, I am sure, will like it. https://twitter.com/BahramShakerin/status/1700550903474819357?t=cD1aNiQ7OKjGg0-oAWdBcg&s=19 Subbiah Arunachalam -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.