This is the first 67 magazines combined into a single book, so that the articles can all be searched at the same time.
The book can be read by flipping pages using the arrows to the left and right and also using the menu below the book
There is a menu
the most useful options are Full Screen, Search (for words), and More Options allows you to download the PDF and also go to the first or last pages.
Jump to Page allows you to type in a specific page number