Includes 3 papers in Italian and 4 in French, all with English translation.
'Colloquium organised by the Health Protection Directorate of the Directorate-General for Social Affairs together with the Environment and Consumer Protection Service and the Environmental Research Division of the Directorate-General for Research, Science and Education in Luxembourg, November 1975' - preliminaries.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Principles and methods for determining ecological criteria on hydrobiocenoses : proceedings of the European Scientific Colloquium, Luxembourg, November 1975. ISBN 0080212336. Published by Pergamon for the Commission of the European Communities in 1976. Publication and catalogue information, links to buy online and reader comments.
