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 [autor] | Jáuregui Lorda, Graciela [traductor] | Phillips, Charles. Brain-balance booster.
por Phillips, Charles [autor] | Jáuregui Lorda, Graciela [traductor] | Phillips, Charles. Brain-balance.
por Phillips, Charles [autor] | Jáuregui Lorda, Graciela [traductor] | Phillips, Charles. Brain-balance workout.