TY - GEN AU - Burggraf, Fred, Ed. AU - Elmer M. Ward, Ed. AU - Herbert P. Orland, Ed. TI - Flexible pavement design studies 1960 U1 - 625.7 PY - 1946///0 CY - Washington, D.C. PB - Highway Research Board KW - Road Construction -- Collected Works N1 - Publication 802 ER -