Hart, John P. <br/><br/>
Extending the phytolith evidence for early maize (Zea mays ssp-mays) and squas (Cucurbita sp.) in Central New York. 

 - Washington-US :   Society for American Archaeology,   2007. 
 - p. 563-583 :   il. 
 - Trimestral 
 - Vol. 72, no, 3 (Jul 2007) 
 - American Antiquity ;   vol. 72 no. 3 .
 - Washington.   Society for American Archaeology. .
<br/><br/><br/>Inglés.