24 books • 13 series
Handbooks: Dinosaurs and Prehistoric Life (DK Smithsonian Handbook) (Smithsonian Handbooks (Paperback))
How to Build a Rocket (How To... (Paperback Franklin Watts)) (How To... (Hardcover Franklin Watts))
How to Split the Atom (How To... (Paperback Franklin Watts)) (How To... (Hardcover Franklin Watts)) (How to S.)
How to Clone a Sheep (How To... (Hardcover Franklin Watts)) (How to S.) (How To... (Paperback Franklin Watts))