Doris Lessing books in order
19 books in the catalogue, about 152 hours of reading in all; the shortest takes 2 hours and the longest 27 hours.
2 series and 13 standalone books in the catalogue.
Canopus in Argos
5 books 1 
Shikasta 7.7 h 2 
The Marriages Between Zones Three, Four and Five 4.7 h 3 
The Sirian Experiments 5.3 h 4 
The Making of the Representative for Planet 8 2.6 h
Shikasta 7.7 h 2 The Marriages Between Zones Three, Four and Five 4.7 h 3 The Sirian Experiments 5.3 h 4 The Making of the Representative for Planet 8 2.6 h 5 The Sentimental Agents in the Volyen Empire length not known
Children of violence
2 books
Standalone books
The Grass Is Singing 4.5 h 
The Habit of Loving 5.1 h 
The Golden Notebook 10.9 h 
Briefing for a Descent Into Hell 5.3 h 
Great Short Stories of the World 14.7 h 
The Memoirs of a Survivor 3.5 h 
To Room Nineteen 6.9 h 
The Good Terrorist 7.8 h 
Prisons We Choose to Live Inside 1.6 h 
The Fifth Child 3.1 h 
Prentice Hall Literature -- Platinum 27.3 h 
Prentice Hall Literature - Timeless Voices, Timeless Themes - The British Tradition 23.9 h 
The Grandmothers 5.9 h