Longo, Frank books & textbook
Absolutely Nasty Sudoku Level 4
Puzzlewright /2007-03-01 Spiral-bound / 160 Pages
isbn-10: 1402743998 / isbn-13: 9781402743993
The New York Times on the Web Crosswords for Teens (New York Times Crossword Puzzles)
St. Martin's Griffin /2002-02-23 Paperback / 96 Pages
isbn-10: 0312289111 / isbn-13: 9780312289119
Absolutely Nasty Sudoku Level 1
Puzzlewright /2007-03-01 Spiral-bound / 160 Pages
isbn-10: 1402743963 / isbn-13: 9781402743962
Absolutely Nasty Sudoku Level 2
Puzzlewright /2007-03-01 Spiral-bound / 159 Pages
isbn-10: 1402743971 / isbn-13: 9781402743979
Absolutely Nasty Sudoku Level 3
Puzzlewright /2007-03-01 Spiral-bound / 160 Pages
isbn-10: 140274398X / isbn-13: 9781402743986
Beyond Black Belt Sudoku: If you have to ask, it's too hard for you. (Martial Arts Puzzles Series)
Puzzlewright /2011-09-06 Paperback / 192 Pages
isbn-10: 1402780702 / isbn-13: 9781402780707
Puzzlewright Guide to Solving Sudoku: Hundreds of Puzzles Plus Techniques to Help You Crack Them All
Puzzlewright /2012-09-04 Paperback / 272 Pages
isbn-10: 1402799454 / isbn-13: 9781402799457
Way Beyond Black Belt Sudoku® (Martial Arts Puzzles Series)
Puzzlewright /2019-10-01 Paperback / 192 Pages
isbn-10: 1454933577 / isbn-13: 9781454933571
Second-Degree Black Belt Sudoku® (Martial Arts Puzzles Series)
Puzzlewright /2005-11-28 Paperback / 192 Pages
isbn-10: 1402737173 / isbn-13: 9781402737176
Second-Degree Brown Belt Sudoku® (Martial Arts Puzzles Series)
Puzzlewright /2005-11-28 Paperback / 192 Pages
isbn-10: 1402737165 / isbn-13: 9781402737169