Great book and narration— needs a PDF

Great book and great really great narration which is difficult for a book of this type.

However the audiobook should come with at minumum the equations in a PDF file. The phrase ‘which can be found in the print and e-book versions of this book’ repeated hundreds of times in the narration could then be eliminated and more value—I would argue fair value—could be delivered to the purchaser of the audiobook.