6 books
Drosera of the World, Volume 2: Oceania, Asia, Europe, North America
Drosera of the World, Volume 1: Oceania
Carnivorous Plants of Australia Magnum Opus, Volume 1
Carnivorous Plants of Australia Magnum Opus, Volume 3
Carnivorous Plants of Australia Magnum Opus, Volume 2
Carnivorous Plants of Australia