I rent this one a lot from my local library, since it is the only generally helicopter-centered book they have. To start off the review, this is the summary regarding the "20th Century Weapons" book series, as seen in the back of the publication:
This series of books describes the development of the 20th Century armaments industry.
Featuring the most modern weapons, and always including personnel involvement, each book looks at today's examples from all over the world.
The books include photographs and illustrations and end with a concise history, tracing the technological development and theaters of operation of each subject.
First of all, I find it quite refreshing finding a book (from the 80's!) for beginners on the subject that includes international developments, not just our own work!
It is filled with wonderful rare and historical photographs of all kinds of rotorcraft, even in-depth illustrations on how military rotorcraft operate in the battlefield, and how their special equipment work.
However, it has many flaws with the information! Allow me to list it, as that's how nitpicky I am:
Overall, I find this book a wonderful reference mostly for the photographs. As far as the actual information? You might want to do some double-checking in another book or the internet.
Out of 5 stars, I give it a 3-and-a-half. Not bad, but mostly for beginners to the world of rotorcraft.