Methods Of Soil Analysis Part 2 Chemical And Microbiological Properties A L Page Editor R H Miller Associate Editor D R Keeney Associate Editor 

 -  Madison : American Society Of Agronomy 1982. 
 - 1159 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0891180729(Hbk): Pt. 2