Proceedings of session of American Railway Association -- Division 5 -- Mechanical
Proceedings of third annual meeting of institute of traffic engineers held at Washington D.C
National association of railroad and utilities commissioners -- Proc
Proceedings of thirty-ninth annual meeting of American association of railroad superintendents
1934 proceedings of fifth annual meeting of institute of traffic engineers
Railway fuel and traveling engineers' association, seventh annual proceedings, 1943
Present status of research on impact on railroad and highway bridges
National Specialists Meeting on Guidance of Aerospace Vehicles -- Proc
First National Symposium on nondestructive testing of aircraft and missile components -- Proc
XIth International Astronautical Congress Stockholm 1960 -- Proc -- Main sessions
Proceedings of National Meeting on manned space flight (unclassified portion)
Proceedings of IAS national tracking and command of aerospace vehicles symposium