Online Public Access Catalogue (OPAC)Library,Documentation and Information Science Division
“A research journal serves that narrow
borderland which separates the known from the unknown”
-P.C.Mahalanobis
330.4 Op.109 80290
Gronau Reuben Value of time in passenger transportation: the demand for air travel New York National Bureau of Economic Research 1970 74p. 0-87014-219-4 * Air travel Passenger transportation