. 2018 Jan 26;15(2):212. doi: 10.3390/ijerph15020212
© 2018 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure A1.
The fluctuation in grain production by year.