Gliding Mammals of the World

This book is out of Australia and associated with CSIRO, which seems to produce an endless number of excellent academic studies (not always particularly readable). The book in some ways is exhaustive. The art, paintings by Peter Schouten, is superb. The book consists of brief descriptions and Schouten's paintings. Many are marked "little or nothing known" and one gets the feel that here is an area of topics for people in PhD programs...