LETTERS TO EDITORS
		
		 
	
	
	
		Enrichment of Salix viminalis Wood in Metal
Ions by Phytoextraction
	
	
		J. P. Łukaszewicz, R. P. Wesołowski, A. Cyganiuk
		
			
			Pol. J. Environ. Stud. 2009;18(3):507-511
		
		
			
	
	 
	
		
		
 
		
		
	
		
	
	
	
		Suitability of cultivation of some perennial plant species on sewage sludge
	
	
		Borkowska H, Jackowska I, Piotrowski J, Styk B
		
			
			Pol. J. Environ. Stud. 2001;10(5):379-381