van der Tak, Herman G.
The Economic benefits of road transport projects by Herman G. van der Tak and Anandarup Ray - Washington, D.C. IBRD 1971 - 42p.
080181314X
Transportation --Mathematical models
X6 V26
The Economic benefits of road transport projects by Herman G. van der Tak and Anandarup Ray - Washington, D.C. IBRD 1971 - 42p.
080181314X
Transportation --Mathematical models
X6 V26
