http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
selected papers from a United Nations symposium held in Barcelona, Spain
Curso Internacional de Hidrología Subterránea
Centro de Estudios e Investigación del Agua (Spain)
Symposium and Workshop on Ground Water Economics (1987 : Barcelona, Spain)
Papers presented at the Symposium and Workshop on Ground Water Economics, organized by the Curso Internacional de Hidrología Subterránea and the Centro de Estudios e Investigación del Augua, held Oct. 19-23 1987, in Bareclona, Spain.