MacLean, R. C. <br/><br/>
Practical field ecology  : a guide botany departments of universities, colleges and schools 

 - London :  George Allen,  1946 
 - 216 p.  : ilus. ; gráfs 
<br/><br/><label>LCCN: </label>29090 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecología agrícola.<br/>Ecología--Manuales de laboratorio.
<br/><br/><label>Dewey Class. No.: </label>630.215  / M2