Ivanova, N A <br/><br/>
[Changes in the mental work capacity of pupils in the lower grades in the course of the school year].  [electronic resource] 

 -  Gigiena i sanitariia  Jun 1982 
 - 90-3 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0016-9900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child<br/>Higher Nervous Activity<br/>Humans<br/>Mental Processes--physiology<br/>Time Factors<br/>Ukraine