Books by Project Media Base:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Project Media Base: Problems in bibliographic access to non-print materials : final report (National Commission on Libraries and Information Science : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979), also by Association for Educational Communications and Technology and United States. National Commission on Libraries and Information Science (page images at HathiTrust)
Find more by Project Media Base at your library, or elsewhere.