Valle, Otto <br/><br/>
Seed Production of Finnish Single-Cut Tammisto Red Clover at Different Latitudes and the Influence of These Enviromental Conditions on Varietal Perfomance 

 - Helsinki :   Suomalainen Tiedeakatemia,   1959. 
 - 20 p. :   ilustr. ;   14 cm. 
 - Annales Academiae Scientiarum Fennicae .