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1.- ENVIRONMENTAL HAZARDS AND THEIR CAUSES IN TWO AREAS OF NICARAGUA WITH DIFFERENT AGRICULTURAL PRODUCTION AND GEOLOGY GEOLOGICAL SURVEY OF FINLAND; ESPOO; FIN; FINLAND, 1999 GEOLOGICAL SURVEY OF FINLAND, CURRENT RESEARCH 1997-1998 Ver registro
2.- GROUNDWATER AND FACTORS AFFECTING ITS QUALITY; EXAMPLES FROM THE ROVANIEMI DISTRICT OF NORTHERN FINLAND AND WESTERN NICARAGUA GEOLOGIAN TUTKIMUSKESKUS; ESPOO; FIN; FINLAND, 2004 Ver registro
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