BDMI joined venture capital firms Bessemer Venture Partners, Valhalla Partners, GSA Venture Partners (formerly Greenhill SAVP) and High Peaks Venture Partners and angel investors in the $15m B round consortium for Flat World Knowledge.

Bertelsmann Digital Media Investments (BDMI), the corporate venturing unit of Germany-based media group Bertelsmann, has backed as a new investor the $15m series B round for Flat World Knowledge, a US-based publisher of free and open college textbooks.

BDMI joined venture capital firms Bessemer Venture Partners, Valhalla Partners, GSA Venture Partners (formerly Greenhill SAVP) and High Peaks Venture Partners and angel investors in the B round consortium.

In March 2009, Flat World raised $8m in its

series A round…