00412nam a2200133Ia 4500 0000009713 20251012174509.0 040317s1971 inu 000 0 eng d 253319005 (CL.) 253319013 (PA.) Economic appraisal of transport project : a manual with case studies Hans A. Adler. Bloomington Indiana University Press 1971. 205 S. 4762 4762