An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the
United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Google Analytics Dashboard for Some thoughts on the factors that controlled prehistoric maize production in the American Southwest with application to southwestern Colorado
Some thoughts on the factors that controlled prehistoric maize production in the American Southwest with application to southwestern Colorado