Programme and invitation to register : First International Specialized Conference on Microorganisms in Activated Sludge and Biofilm Processes, Paris - France, September 27-28 1993.
International Specialized Conference on Microorganisms in Activated Sludge and Biofilm Processes(1st :1993 :Paris, France)
[Paris? : CFRP and AGHTM,
1993?]
Cover title.