How can I download China county level maize production and area historical annual data?
Dear Zai,
MOST LIKELY you should enter a search engine and enter the term "county: China". However how many counties on this earth have the name "China", I do not know. You most probably will have to identify more precisely which "China county" interests you.
You can go to the FAO website (http://www.fao.org/home/en/), in which have dataset contain crop statistical data about all country.
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