Filing, Retrieval and Control Systems Book

We have read quite a few dinosaur books by now, and this one stands out as a good beginner's book: It is short (20 pages) and can thus be read in one sitting, it has simple vocabulary so it can probably be easily read by a six year old. It is not encyclopedic in form, such as for instance the Pocket Genius: Dinosaurs or Dinosaur Detectives, rather focuses on a handful of dinosaurs and important aspects of their features, illustrated by little diagrams, also including a few interesting general facts. My kid was enchanted by the format of this book and asked to get the rest of the books from this Eye Openers series.