Hello,
I had to try a couple of databases but I believe the ABI-Inform Global database is a good place to start. You can connect to it through the library's Database A-Z list under "A" at
http://libguides.unomaha.edu/A-ZList
There was a lot of international research on this topic so if you want to limit it to the United States you'll need to change a search field in the search boxes. This is the search I did -
1st line - rural manufacturing
2nd line - educational attainment
3rd line - united states (here change the drop down from Anywhere to Location - it's a subheading under Subject)
Then after you get the search results, you'll see a list of Source Types. I would suggest you select either Scholarly Journals or Trade Journals.
If you need further assistance, you might want to contact our business librarian Nora Hillyer at nhillyer@unomaha.edu
Regards,
Melissa