National Cooperative Highway Research Program. (1982). NCHRP research on bridge engineering: An NCHRP staff digest of the progress and status of bridge engineering research under the National Cooperative Highway Research Program. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Cooperative Highway Research Program. NCHRP Research on Bridge Engineering: An NCHRP Staff Digest of the Progress and Status of Bridge Engineering Research Under the National Cooperative Highway Research Program. Washington, D.C: Transportation Research Board, National Research Council, 1982.
Cita MLA (9th ed.)National Cooperative Highway Research Program. NCHRP Research on Bridge Engineering: An NCHRP Staff Digest of the Progress and Status of Bridge Engineering Research Under the National Cooperative Highway Research Program. Transportation Research Board, National Research Council, 1982.