He was also the author of many popular books on medicine.

The magazine series was edited into a popular book in 1955.

It is based on the popular books of the same name.

The book has become one of the most popular books in 2011.

He is best known for his series of popular Christian books.

The Bible remains the most popular book of all time.

Its force is often used in the public media and popular books as a unit of energy.

It was, like the Bible, among the most popular books of its day.

Also, I happen to know that this is a very popular book.

He wrote popular books on history, sexual education and science.