: Authors sometimes upload older versions or specific chapters. You can request a full-text PDF directly from the researchers if it isn't public. 3. Digital Bookstores (E-book Versions)

: Search the HAL repository for "Immunologie". While the full textbook may be copyrighted, many comprehensive précis and course summaries by the same authors are available for free download.

Some editions or related "Précis" materials are hosted on academic sharing sites: