TY  - BOOK
AU  - Untermann, Richard K.
TI  - Principles and pratices of grading, Drainage and road alignment: an ecologic approach
SN  - 0879096411
U1  - 628.1 
PY  - 1978///
CY  - Virginia
PB  - Reston publishing
KW  - Drainage engineering
KW  - Sanitation engineering
ER  -