He claims that his programs have written over 200,000 books.
He wrote over 30 books and 2500 articles during his career.
He wrote over 70 books, and was one of the first people in the world to study healthcare.
During the course of his life, he wrote over 360 books and articles.
Overall he wrote over 30 books between 1937 and 1940.
Since 1963 she has written over 1000 articles and 8 books.
She is a writer who has written over 35 books for young people.
He writes most of his own music and has written over 20 books.
So far, she has written over 130 books, and about 2000 articles.
He is also an author having written over 70 books.