Väisänen, Ulpu <br/><br/>
Groundwater and factors affecting its quality  examples from the Rovaniemi district of Northern Finland and western Nicaragua ; 19 tables 
Ulpu Väisänen 
 -  Geological Survey of Finland  2004 
 - 149 S., [16] Bl.  Ill., graph. Darst., Kt. 
 - Bulletin / Geological Survey of Finland / Geologian Tutkimuskeskus: Bulletin  400 .
<br/><br/>Zugl.: Diss. 
<br/><br/><label>ISBN: </label>9516908748 
<br/><br/><label>Universal Decimal Class. No.: </label>546.212