You will find that this novel lingers in your mind long after reading.
Automata, Formal Languages, and Turning Machines, Emre Sermutlu, PB, 2020s
What stands out is the illustrated slipcase that holds the set.
Orthodox- St Ignatius Pocket Prayer Book Modern English Edition Hardcover
You will find that this activity book has a good balance of easy and hard puzzles.
„Polyglot: How I Learn Languages“ by Kato Lomb (TESL-EJ, trade paperback)
This novel is a testament to the power of a well-told tale.