I have found this book very useful both in the field and in the museum. It represents an excellent feat of practical scholarship by Bonaccorso, with good keys, locality information (with maps), reference to specific museum specimens, and external measurements for all species from PNG, including the provinces in the Bismarcks and northern Solomons. It is not only a terrific synthesis of what is known of bat biology in the country, but also offers a large store of new information. Also extremely handy are the comprehensive gazetteer at the end with lat/long coordinates and the good bibliography. Fiona Reid's excellent color illustrations round out the guide.