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Authors
Ullah, Arif
Khan, Dilawar
Khan, Imran
Zheng, Shaofeng
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Funding
Funding for this research was provided by:
Key Projects of Humanities and Social Science. Research Supported by Northwest A&F University, China (Grant No. Z109021414)
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Article History
Received: 26 September 2017
Accepted: 13 February 2018
First Online: 7 March 2018
