Gaya APA
Eck, Ronald W.. (1986).
Economic analysis of broad-based dips versus aluminum pipe culverts on low volume roads .
:
TRB.
Gaya Chicago
Eck, Ronald W..
Economic analysis of broad-based dips versus aluminum pipe culverts on low volume roads.
:
TRB,
1986.
Chart.
Gaya MLA
Eck, Ronald W..
Economic analysis of broad-based dips versus aluminum pipe culverts on low volume roads.
:
TRB,
1986.
Chart.
Gaya Turabian
Eck, Ronald W..
Economic analysis of broad-based dips versus aluminum pipe culverts on low volume roads.
:
TRB,
1986.
Chart.