TY  - BOOK
AU  - Sayers, Michael W;
AU  - Gillespie, Thomas D;
AU  - Paterson, D. O
TI  - Guidelines for conducting and calibrating road roughness measurements
SN  - 0821305905
U1  - 625.8 
PY  - 1986///
CY  - Washington, D.C
PB  - World Bank
ER  -