Methods of Study in Quantitative Soil Ecology:Population,Production and Energy Flow 

 - London  Blackwell  1971 
<br/><br/><label>ISBN: </label>0 632 05680 0 
<br/><br/><label>LC Class. No.: </label>631.4/PHI  / 2 
<br/><br/><label>Dewey Class. No.: </label>631.4/PHI  / 2