Books like The Fifth Kingdom
Bryce Kendrick
The Fifth Kingdom is 386 pages, about 7 hours 5 minutes at 250 words a minute.
8 books to read next
How long each takes
Fundamentals of the Fungi 10.4 h 
Entangled Life 6.8 h 
Introductory Mycology 11.2 h 
Mycelium Running 6.4 h 
Mushrooms 5.6 h 
The Biology of Fungi 2.7 h 
Ainsworth & Bisby's Dictionary of the Fungi 11.7 h 
Atlas of Clinical Fungi 21.0 h Bar height shows length. Estimated at 250 words a minute.