Seabirds of the World: A Photographic Guide.
A Photographic Guide to the Birds of Peninsular Malaysia and Singapore (1993).
Birds of South-east Asia: A Photographic Guide (1998).
A Photographic Guide to the Birds of Southeast Asia (2000).
A Photographic Guide to the Birds of Indonesia (2001).
A Photographic Guide to Mammals of South-east Asia.
A Photographic Guide to Birds of Borneo.
A Photographic Guide to Snakes & other Reptiles of Australia.
A Photographic Guide to Trees of New Zealand.
The Deep Photographic Guide to the Constellations.
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