Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Counted over 40 errors in this book

I have never run across a technical book with more serious errors than this one. Its unreal that this book was, apparently, not proof read at all before publication; because you cannot trust *any* information in "Communications Licensing and Certification Examinations: The Complete TAB Reference" due to the *huge* number of major errors. At the minimum an errata should be sent with each book, even though the errors are so pervasive that a re-publication or second edition should have been performed to clear these mistakes up.