Piperno, D R <br/><br/>
Archaeology. On maize and the sunflower.  [electronic resource] 

 -  Science (New York, N.Y.)  Jun 2001 
 - 2260-1 p.  digital 
<br/><br/> Publication Type: Historical Article; Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.1062689  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--history<br/>Americas<br/>Crops, Agricultural--history<br/>Cucurbitaceae<br/>Fossils<br/>Helianthus<br/>History, Ancient<br/>Pollen<br/>Seeds<br/>Zea mays