Open AccessResearch on Organic Agriculture Development in Great Khingan District
Publication year - 2016
Publication title -
nong ye ke xue
Language(s) - English
Resource type - Journals
eISSN - 2164-5507
pISSN - 2164-5523
DOI - 10.12677/hjas.2016.66025
Subject(s) - agriculture , geography , environmental protection , archaeology