There has been data ("USMLE Step 1 Lecture Notes 2018: Immunology and Microbiology (USMLE Prep) - ISBN-13 978-1-5062-2111-3") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Thu Dec 26 06:26:07 2019, so the data displayed here has been removed .