<a href="//commons.wikimedia.org/wiki/Maps_of_China" class="mw-redirect" title="Maps of China">Maps of China</a>: Agricultural regions of China – Note: Boundary representation is not necessarily authoritative.
Unknown author<span style="display: none;">Unknown author</span> (U.S. Central Intelligence Agency)
1986
<a rel="nofollow" class="external text" href="http://www.lib.utexas.edu/maps/middle_east_and_asia/china_agricultural_86.jpg">Map No. 800635 (544061) 5-86</a> – produced by the <a rel="nofollow" class="external text" href="https://www.cia.gov/library/publications/cia-maps-publications/index.html">U.S. Central Intelligence Agency</a> – see also <a rel="nofollow" class="external text" href="http://www.lib.utexas.edu/maps/china.html">China Maps Collection</a>