Spain, Argentina, Chile. In libraries, the paper is available, titled: Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks. - Hydrobiologia. 2002, 469: 203-204. Universidad de Burgos, Universidad de León, Universidad de Salamanca, University of Salamanca, Universidad de Valladolid, Spain; Universidad de San Andres Library, Buenos Aires, Argentina; Universidad de Concepcion, Concepcion, Chile;

Spain, Argentina, Chile. 
In libraries,  the paper is available, titled:
Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks. - Hydrobiologia. 2002, 469: 203-204. 
Universidad de Burgos,
Universidad de León,
Universidad de Salamanca,
University of Salamanca,
Universidad de Valladolid, Spain;
Universidad de San Andres Library,
Buenos Aires, Argentina;
Concepcion, Chile; http://5bio5.blogspot.com/2013/06/spain-argentina-chile-in-libraries.html
**
this paper is also available in libraries of other countries, e.g.
Thailand, Singapore, Argentina, Chile, Armenia, Norway, Poland, South Africa
http://5bio5.blogspot.com/2013/06/in-libraries-spain-thailand-singapore.html
**
key words: Improving water quality, sustainability, environment safety. 
Avalability in libraries;
Full text online free:
**
**
Citation of this paper (Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks), examples, see at: 
**
Availability in Spain:
Universidad de Burgos
Biblioteca Universitaria
Burgos, 09001 Spain
              
Universidad de León
Biblioteca Universitaria
León, 24071 Spain
              
Universidad de Salamanca
Servicio de Bibliotecas USAL
Salamanca, 37007 Spain
University of Salamanca:

 University of Salamanca, Library:


   **           
Universidad de Valladolid,
Biblioteca Universitaria


Valladolid, 47003 Spain
**
also in:
Buenos Aires, Argentina;

Universidad de Concepcion,
Concepcion, Chile;