Philip Pullman books in order
25 books in the catalogue, about 150 hours of reading in all; the shortest takes 1 hour and the longest 18 hours.
3 series and 14 standalone books in the catalogue.
His Dark Materials
7 books 1 
Northern Lights 7.5 h 2 
The Subtle Knife 6.4 h 3 
The Amber Spyglass 10.0 h 
Lyra's Oxford 1.2 h
Northern Lights 7.5 h 2 The Subtle Knife 6.4 h 3 The Amber Spyglass 10.0 h Lyra's Oxford 1.2 h Once Upon a Time in the North length not known
The Collectors length not known
Serpentine length not known
Sally Lockhart
4 books
The Book of Dust
3 books
Standalone books
Diccionario de Símbolos Tradicionales 9.1 h 
Frankenstein (Oxford Playscripts) 1.4 h 
The Firework-maker's Daughter 2.1 h 
Clockwork 2.0 h 
Detective Stories 4.1 h 
I Was a Rat! 3.2 h 
His Dark Materials 18.0 h 
Scary! 2 3.8 h 
The Scarecrow and His Servant 4.2 h 
Once Upon a Time in the North 2.0 h 
The Good Man Jesus and the Scoundrel Christ 4.1 h 
Grimm Tales 8.1 h 
The Writer's Map 4.7 h 
Serpentine 1.5 h