Kampa, Nele <br/><br/>
German National Proficiency Scales in Biology: Internal Structure, Relations to General Cognitive Abilities and Verbal Skills.  [electronic resource] 

 -  Science education  Sep 2016 
 - 903-922 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8326 
<br/><br/><label>Standard No.: </label>10.1002/sce.21227  doi