P – EC – PP21

True or False? There are about 100 books in the pile.

P – EC – PP22

True or False? There are about 150 books in the pile.

P – EC – PP24

True or False? There are about 500 books in the pile.

P – EC – PP9

True or False? There are about 40 people in line.

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from Dr. David Costello.

You have successfully subscribed!