Petrusevich, K <br/><br/>
[Basic concepts in studies of secondary production].  [electronic resource] 

 -  Zhurnal obshchei biologii   
 - 12-29 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0044-4596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology