“...Beijing da xue....”
Full text available from Biological Science Database: 01/01/2017 to present
Full text available from East & South Asia Database: 01/01/2017 to present

“...Beijing da xue....”
Full text available from ABI/INFORM Global: 05/01/2011 to present
Full text available from East & South Asia Database: 05/01/2011 to present
Full text available from Social Science Database: 05/01/2011 to present

“...Beijing da xue....”
Full text available from ABI/INFORM Global: 06/01/2016 to 1 year ago