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Not Quite an Outsider has given the definitive answer in a comment. But answers belong as answers, not as comments, so I'll reproduce it here:


  "No, not really." Consult your librarian for details.


There is no single definitive store. There are several authoritative stores, and then a few that are broader but contain a lot of junk too, like Google Scholar. Part of being a post-graduate researcher is acquiring (if you haven't already), these skills &amp; knowledge of the whens, wheres, whats, whys, and hows of search.

Work with your supervisors and fellow students to develop your own search skills.

And talk to your librarians. Seriously.