Why I put a star? Just that I was very interested and attracted by the theme having had the opportunity to read articles of the author. However, the books that have reached me shows great negligence on the part of the editor in the quality monitoring. The first copy received contained only 298 pages when the book is supposed to make nearly 600. I was missing the entire second half. A second book was sent to me and ditto the same problem. This is the first time in nearly 30 years that I order books this has happened.
