TY  - BOOK
AU  - Crum, Roy W. 
ED  - Annual meeting of the Highway Research Board
TI  - Proceedings / 
PY  - 1931///
CY  - Washington, D.C. : 
PB  - National Research Council, 
KW  - CARRETERA
N1  - Division of Engineering and Industrial Research. National Research Council
ER  -