Robie H. Harris books in order

5 books in the catalogue, about 7 hours of reading in all; the shortest takes 37 minutes and the longest 2 hours.

5 standalone books in the catalogue.

Standalone books

It's Perfectly Normal 1994 1.8 h Let's Talk About Sex 1995 1.7 h It's So Amazing! 1999 1.6 h It's Not the Stork! 2006 1.1 h Who Has What? 2011 37 min