The Basic Library List Committee rates books according to the strength of its recommendation. You will find the ratings listed below the book's publishing information at the top of the page for that book.
Using the Browse function, you can see all books with a given rating and can restrict your view by topic as well.
The ratings currently in use are listed below.
BLL — The Basic Library List Committee suggests that undergraduate mathematics libraries consider this book for acquisition.
BLL* — The Basic Library List Committee recommends this book for acquisition by undergraduate mathematics libraries.
BLL** — The Basic Library List Committee strongly recommends this book for acquisition by undergraduate mathematics libraries.
BLL*** — The Basic Library List Committee considers this book essential for undergraduate mathematics libraries.