Rookie read about science books : spring summer and fall

Rookie read about science books : spring summer and fall titles: 1. how do you know its summer 2. how do you know its fall 3. how do you know its spring all 3 are by Allan fowler all 3 are paperbacks all three are good preowned condition all 3 are from a smoke free home consider creating a bundle to get offered a discount please keep in mind bundles can't exceed 5lbs thanks for looking happy shopping