Harman, Rebecca <br/><br/>
Carbon-oxygen and nitrogen cycles: Respiration,photosynthesis and decomposition 

 - Oxford,  Heinemann library  2005 
 - 32 p  col.ill.  24 cm 
<br/><br/><label>ISBN: </label>9780431013121 
<br/><br/><label>Nat. Bib. No.: </label>
<br/><br/><label>LC Class. No.: </label>J 551.511 HARM 
<br/><br/><label>Dewey Class. No.: </label>J 551.511 HARM