por Phillips, Charles [autor] | Phillips, Charles. Numerical thinking : 50 brain-training puzzles to change the way you think | Jáuregui Lorda, Graciela [traductor].
por Phillips, Charles, 1962- [autor] | Jáuregui Lorda, Graciela [traductor] | Phillips, Charles, 1962-. Objective thinking.
por Phillips, Charles, 1962- [autor] | Phillips, Charles, 1962-. Memory challenge : 40 puzzles, tests and exercises to trainyour brain to remember anything | Jáuregui Lorda, Graciela [traductor].
por Phillips, Charles [autor] | Phillips, Charles. Stay smart : 100 exercises to keep your brain sharp | Jáuregui Lorda, Graciela [traductor].