Wilkinson, R. E. <br/><br/>
How to know the weeds / 
by R. E. Wilkinson and H. E. Jaques. 
 - 3a ed. 
 - Dubuque, Iowa :  W.M.C. Brown,  1979. 
 - Pictured key nature series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Malezas<br/>Taxonomía
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto