This was when published the definitive account fo Doctor WHo monsters... and just about the only catalogue of the Doctor's adventures to date (apart from the Making Of Doctor Who book). The illustrations by Chris Achilleous are excellent, some bveing done for the book, and others from the front cover of Target's many Doctor Who books. If you are lucky enough to have a first edition, you will also have the free poster of the cover artwork, which certainly does justice to Achilleos's designs.
The book only covers the period to the end of the Fourth Doctor's first year in the role, and can now be seen as a guide to the early years of Doctor Who monsters. It is written for children, but Dicks never patronises, and the book is a joy for adults to read too. This book could well do with an update and I am sure its simple approach would work as a complement to the rather over-researched, retentive modern day equivalents we have seen published since the mid 1980s.