[caption id="attachment_31953" align="alignleft" width="150" caption="Traditional textbooks can cost more than $900 per year, according to national surveys."]Traditional textbooks can cost more than $900 per year, according to national surveys.[/caption]

Nineteen business majors are trying to sell the idea of free online textbooks to their professors in an internship program that pushes open-content technology designed to counter escalating book costs.

The internships, introduced this year by open textbook provider Flat World Knowledge, let sophomore and junior business students earn college credit and a little spending cash if their sales pitch convinces a professor...

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