TY  - BOOK
AU  - Krebs,Robert D.
AU  - Walker,Richard D.
TI  - Highway materials
U1  - 625.735 
PY  - 1971///]
CY  - New York
PB  - McGraw-Hill
KW  - Road materials
KW  - Roads
KW  - Subgrades
KW  - D
ER  -