Aroideana Volume 13
Volume 13 from 1990 contains 7 articles in a single issue.

Purchase it here.

Author Title
Alistair HayCollecting alocasia in New Guinea
Dorothy E. ShawGermination of Typhonodorum lindleyanum at Brisbane, Australia
Kathleen UptonBiological pest control in the Missouri Botanical Garden research greenhouse
 Anonymous1990 International Aroid Society show
Nic van der KnaapCultural techniques for Anthurium andreanum Andr? (Araceae)
Jin MurataIntroduction of the plants of Arisaema recently recognized from Japan
Thomas B. CroatA comparison of aroid classification systems