Laitala, Matti <br/><br/>
Helsingin kartta-alueen kalliopera / 
Matti Laitala. 
 - Espoo:   Geological Survey of Finland,   Geologian tutkimuskeskus  1991.  
 - 5-47 p. :  ill., maps, tables ;  25 cm.  +2 maps. 
<br/><br/> Conduct map 1: geological map of Finland. Sheet - 3141 - Ristiina.  Conduct map 2: geological map of Finland. Sheet - 2221 - Jalasjarvi. 
<br/><br/>Includes bibliographical references (p. [45]-47). 
<br/><br/> Pre-Quaternary rocks of the Helsinki map-sheet area. 
<br/><br/><label>ISBN: </label>9516903894 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks--Finland
<br/><br/><label>Dewey Class. No.: </label>552.094897