- E-bookAmusements in MathematicsHenry Ernest Dudeney
- E-bookAmusements in MathematicsHenry Ernest Dudeney
- E-bookThe Canterbury Puzzles And Other Curious ProblemsHenry Ernest Dudeney
- E-bookTHE CANTERBURY PUZZLES & OTHER CURIOUS PROBLEMSHenry Ernest Dudeney
- E-bookAmusements in MathematicsHenry Ernest Dudeney
- E-bookThe Canterbury Puzzles, and Other Curious ProblemsHenry Ernest Dudeney
- E-bookAmusements in MathematicsHenry Ernest Dudeney
- E-bookAmusements in MathematicsHenry Ernest Dudeney
- E-bookThe Canterbury Puzzles, and Other Curious ProblemsHenry Ernest Dudeney