Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Needs Professional Proof reading.

Just received 'The All-American Five Radio'.This book is riddled with Typos, not just missing a letter here or there,but calling the term Pi...pie, calling a Sine wave...a Sign wave, etc.In the very first chapter there is an equation demonstrating Ohms Law,the answer given is wrong. The book gives the answer 135 by multiplication, the answer is 60 by Division! The equation just below it has the right answer but the fraction has the values in the wrong position. This on just a brief look at the book so far. Many of the definitions in the back are bad or just plain wrong. Not sure what to trust in this book. The concept is good; could have been better written for a learning manual, especially about electric and Radio. My personal opinion is that anyone giving this book a top five star rating just doesn't get it or they are associated with book somehow,,,this is suppose to be a how to learning manual, understand?