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Uitgaven door Jeff Heldt

Cover for Jeff Heldt · Mind Logic Games (Paperback Book) (2018)

Mind Logic Games (2018)

Cover for Jeff Heldt · Geometry Puzzles (Book) (2018)

Geometry Puzzles (2018)

Cover for Jeff Heldt · Mathematical Puzzles For Children: Hundred Puzzles - The Best Japanese Puzzles Collection - Math Puzzle Books for Kids (Paperback Book) (2018)

Mathematical Puzzles For Childre... (2018)

Cover for Jeff Heldt · Kakuro Puzzle: The Best Japanese Puzzles Collection - Kakuro Puzzle Books (Paperback Book) [Large type / large print edition] (2018)

Large type / large print edition

Kakuro Puzzle: The Best Japanese... (2018)

Cover for Jeff Heldt · Complex Math Puzzles (Paperback Book) (2018)

Complex Math Puzzles (2018)

Cover for Jeff Heldt · Quick Brain Teasers For Adults (Paperback Book) (2018)

Quick Brain Teasers For Adults (2018)

Cover for Jeff Heldt · Math Brain Teasers For Adults With Answers: Water Fun Puzzles - The Best Puzzles Collection - Brain Teaser Books (Paperback Book) (2018)

Math Brain Teasers For Adults Wi... (2018)

Cover for Jeff Heldt · Mental Maths Puzzles: Nanro Puzzles - The Best Puzzles Collection - Logic and Math Puzzle Books (Paperback Book) (2018)

Mental Maths Puzzles: Nanro Puzz... (2018)

Cover for Jeff Heldt · Maths Teasers For Adults: Pencilmark Sudoku Puzzles - The Best Puzzles Collection - Sudoku Puzzle Books (Paperback Book) (2018)

Maths Teasers For Adults: Pencil... (2018)

Cover for Jeff Heldt · Easy Brain Teasers For Adults: Fillomino Puzzles - The Best Puzzles Collection - Brain Teaser Books (Paperback Book) (2018)

Easy Brain Teasers For Adults: F... (2018)

Cover for Jeff Heldt · Math Logic Puzzles For Adults: Roma Puzzles - The Best Puzzles Collection - Logic Puzzle Books (Paperback Book) (2018)

Math Logic Puzzles For Adults: R... (2018)

Cover for Jeff Heldt · Mathematics Puzzle Games With Answers (Paperback Book) (2018)

Mathematics Puzzle Games With An... (2018)

Cover for Jeff Heldt · Math Games (Paperback Book) (2018)

Math Games (2018)

Cover for Jeff Heldt · Brain Teasers And Riddles For Adults (Paperback Book) (2018)

Brain Teasers And Riddles For Ad... (2018)

Cover for Jeff Heldt · Best Brain Games (Paperback Book) (2018)

Best Brain Games (2018)

Cover for Jeff Heldt · 5th Grade Math Puzzles: Tents Puzzles - 100 Large Print Puzzles - Brain Games for Kids (Paperback Book) (2018)

5th Grade Math Puzzles: Tents Pu... (2018)