I received a complimentary copy of the book A Photographic Guide to the Dragonflies of Singapore. The book is authored by H.B. Tang, L.K. Wang and M. Hamalainen, and published by National University of Singapore. It is really an excellent book with excellent photos. I give a thumb up for the book.
I received a complimentary copy of the book because there is a photo (Rhyothemis pygmaea, pp. 191) in the book contributed by me.