16 books • 3 series
Test Universales de Inteligencia
The Mammoth Book of Astounding Puzzles (The Mammoth Book)
Self-Scoring Personality Tests (Self-Scoring Tests)
Self-Scoring IQ Tests (Self-Scoring Tests)
The Mammoth Book of Mindbending Puzzles (The Mammoth Book) (Mammoth Books)
The Mammoth Book of Puzzles (Mammoth Books)
A Mensa Puzzle Book
Test Your I.Q.
Guide to Intelligence and Personality Testing
Thinking Person's
The Future of Intelligence
Mensa
Check Your Child's I.Q.
Brain
How Intelligent Are You?
How Intelligent Are