Reenapaa, Yrjo <br/><br/>
Annales Academia Scientiarum Fennicae Series A. 82-88 

 - Helsinki  S.Tiedea Katermia  1966 
<br/><br/><label>Subjects--Topical Terms: </label><br/>5575h:M64
<br/><br/><label>Dewey Class. No.: </label>5575h:M64  / H9