From the publisher:
Never cast the same spell Twice!
101 3rd Level Spells gives you – yes, you guessed it – 101 3rd level spells, that will help you realize the vision you’ve had for your spellcaster.
101 3rd Level Spells brings a host of new special effects to your character’s spellbook.
Wholly compatible with the Pathfinder Roleplaying Game (1st Edition), 101 3rd Level Spells adds new agonizing choices to the creation of your character’s spell list and their advancement without breaking the game.