Effects of Municipal Solid Waste Compost and Sewage Sludge on Chemical and Spectroscopic Properties of Humic Acids from a Sandy Haplic Podzol and a Clay Loam Calcic Vertisol in Portugal
                        AuthID
P-003-VDT
                
    P-003-VDT
 
    
                     
    
                     
    
                     
    
                     
                    