If you use the Table of Contents links, the "PDF Full Text" link, or the "EPUB Full Text" link to view the ebook in EBSCO's embedded viewer,
you can then use options at the very top of the screen to download PDFs of selected pages.
When viewing pages of the text in the browser, look at the top for the links that say "Save Pages," "Email Pages," and "Print Pages."
(The option exists to download the whole ebook but requires creation of an EBSCO account and installation of additional software.)
It may limit your downloaded pages in a given session to 100, 50, 40, or some other number smaller than maybe you want, but that limit should reset when next you return to that ebook in a new tab later.