Books like The Defiant Agents
Andre Norton
The Defiant Agents is 198 pages, about 3 hours 38 minutes at 250 words a minute.
12 books to read next
How long each takes
Pebble in the Sky 4.1 h 
Sea of Tranquility 5.0 h 
Dragon's Time 8.2 h 
The Martian Chronicles 4.8 h 
The Menace from Earth 4.1 h 
The Illustrated Man 4.6 h 
Red Mars 10.9 h 
The Naked Sun 4.2 h 
The Currents of Space 4.1 h 
Lord of Light 5.1 h 
The Female Man 3.9 h 
The Stars, Like Dust 4.2 h Bar height shows length. Estimated at 250 words a minute.