I&#x27;m afraid I don&#x27;t know -- I read a pdf, and a library hardback for the latter book. That one shouldn&#x27;t be hard to find from a U.S. library, and would tell you whether you want to delve into the former. (Which I found really interesting, though it&#x27;s maybe too ready to valorize Ptolemy just because we know so little about his predecessors.)