IOBC-WPRS Bulletin Vol. 14 (8), 1991

Plant growth-promoting Rhizobacteria; progress and prospects.
The 2nd international workshop on plant growth-promoting Rhizobacteria.
(Edited by C. Keel, B. Koller & G. Défago),
Publication under auspices of the Working Group: "Integrated Control of Soil Pests",
Interlaken (Switzerland), 14-19 October 1990, 418 pp,
ISBN 92-9067-042-8