A. Hay

• A new species of Aglaonema Schott (Araceae) from Terengganu, Malaysia
• Aroids of Papua New Guinea
• Checklist & botanical bibliography of the Aroids of Malesia, Australia, and the tropical western Pacific region
• Photographisches Praktikum Für Mediziner und Naturwissenschaftler
• The genus Alocasia (Araceae-Colocasieae) in the Philippines
• The modern builders' guide
• Transport for the space economy