In general, pdfs are the worst files to convert. See the sticky post for a lot of details:
Read this before Posting PDF Questions
This particular file does seem to have excellent text. You can select and paste it, and it seems to be complete and in order. Unlike so many pdfs. So in theory it might convert well.
But the two columns are the killer. Even if the text comes out of the two columns un-garbled in a conversion, epub does not have any easy two column display. And it's pretty obvious you want this book to preserve the columns as they are, not only as columns but with the entries aligned as in a table.
So to make this into an epub you would have to put the text into tables. That would be a manual job, a huge one, (unless someone knows of a tool to automate it). And tables have real troubles on an e-reader device if a user changes text size, for example, or if the table entries don't fit the reader screen size.
A book like this is best left as a pdf, IMHO.