Books like What Is to Be Done?
V. I. Lenin, John Barber
What Is to Be Done? is 207 pages, about 3 hours 48 minutes at 250 words a minute.
10 books to read next
How long each takes
The Marx-Engels Reader 14.5 h 
Today's Isms 4.5 h 
To the Finland Station 9.3 h 
Essential Works of Socialism 11.1 h 
Capitalism, Socialism and Democracy 8.0 h 
The Lion and the Unicorn 2.3 h 
The Fatal Conceit 3.5 h 
The Managerial Revolution 5.1 h 
Hegemony and Socialist Strategy 4.1 h 
Socialism 6.6 h Bar height shows length. Estimated at 250 words a minute.