An edition of Proceedings of the 27th symposium organized by the Permanent Section of Microbiological Standardization and held at Medical Dept., Inselspital, Berne, October 9-11, 1969 (1971)

Proceedings of the 27th symposium organized by the Permanent Section of Microbiological Standardization and held at Medical Dept., Inselspital, Berne, October 9-11, 1969.

By International Symposium on Enterobacterial Vaccines Bern 1969.