Books like The Ultimate Sex Book
Anne Hooper
The Ultimate Sex Book is 192 pages, about 3 hours 31 minutes at 250 words a minute.
12 books to read next
How long each takes
The Tao of Sexology 4.1 h 
The Joy of Sex 4.6 h 
Understanding Human Sexuality 12.1 h 
Sexuality Today 10.8 h 
Human Sexuality 10.5 h 
The Illustrated Encyclopedia of Sex 8.2 h 
The Kama Sutra 3.5 h 
More Joy of Sex 4.4 h 
A Marriage Manual 5.7 h 
Come as You Are 8.2 h 
Sex 5.6 h 
The Erotic Imagination 4.5 h Bar height shows length. Estimated at 250 words a minute.