Many francophone universities provide access via ScholarVox , which allows you to read the full text online if your institution has a subscription.
If you need immediate info, this book focuses on adapting anesthesia for patients with specific "terrains" (pre-existing conditions):
Recent editions include a free companion app when you purchase the physical book. This app provides the full digital version of the text on mobile devices.
These sites often use third-party file hosts (like Mega, Google Drive, or MediaFire). Be cautious of "Download" buttons that look like ads; look for plain text links or "Direct Download" icons.
Use the internal search function with the keyword "Terrains" or "Mérat" to find the specific entry for this title.