Illinois Tech Libraries
Inventory of complete NASA TR-R series including online availability or lack thereof via NASA Technical Reports Server: Listing of reports by report number, indicating online availability and evidence of public domain status
Illinois Institute of Technology
Ahrens, Aric G.
NASA Technical Reports Server (NTRS)United States. National Aeronautics and Space Administration.Federal Depository Library Program (FDLP)
CC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/