ISSN Print: 2150-850X

ISSN Online: 2150-8526

Website: http://www.scirp.org/journal/pos

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If you have any questions about paper submissions, processing and publishing, please send your inquiries to pos@scirp.org.

If you need immediate access to the editorial assistants, please contact us by using skype
(account: scirp_service):  Text Contact,  Voice Contact,
or QQ: 3061685648
or call +1-209-266-2606 (have your paper ID ready when you make the call).

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Formal complaints are handled based on SCIRP's Complaints Procedure.