adj.occurring once every 20 years

A Vicennial View of Squid Magnetocardiography
A Vicennial View of Squid Magnetocardiography
The vicennial of scientific searches in the field of plant physiology.
Clark University vicennial conference on psychology and pedagogy.
An Overview of the Vicennial Research into Yangzhou Eight Eccentrics
Remotely sensed vicennial changes of green phytomass, Salix cover, and leaf turnover in a sedge-shrub tundra, Arctic National Wildli...
Gain,Grasp and Prospect:Summary of the Conference for Chinese Musicology Vicennial Anniversary
Naval Health Research Center: Thirty-Year Review, (also includes the Vicennial Review and Historical Highlights)
The pillars of sustainable development: A comparative analysis of their status in vicennial environmental conferences
Basic Developments in Financial Fields during the Recent Vicennial Period : A Comparative Review of Financial Regulations and Moneta...