Kogelmann, Wilhelm J <br/><br/>
Soil acidity and manganese in declining and nondeclining sugar maple stands in Pennsylvania.  [electronic resource] 

 -  Journal of environmental quality   
 - 433-41 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0047-2425 
<br/><br/><label>Standard No.: </label>10.2134/jeq2004.0347  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acer--metabolism<br/>Environmental Monitoring<br/>Hydrogen-Ion Concentration<br/>Manganese--analysis<br/>Pennsylvania<br/>Plant Leaves--chemistry<br/>Soil--analysis