Donald P. Hopkins <br/><br/>
Chemicals humus, and the soil : A simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soi 

 - London  Faber and Feber Ltd  1957 
 - 288p 
<br/><br/>Donald P. Hopkins: Chemicals humus, and the soil : A simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soil fertility.  London.  Faber and Feber Ltd, 1957.--(631.41HOP)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.41  / HOP