International Navigation Congress Baltimore, Md. (1961). XXe Congrès International de Navigation: = Sect. 1, Inland navigation; 1, Subject Criteria for the economic justification of new inland navigable waterways or the improvement of existing ones. General-Secretariat P.I.A.N.C.
Chicago-Zitierstil (17. Ausg.)International Navigation Congress Baltimore, Md. XXe Congrès International De Navigation: = Sect. 1, Inland Navigation; 1, Subject Criteria for the Economic Justification of New Inland Navigable Waterways or the Improvement of Existing Ones. Brussels: General-Secretariat P.I.A.N.C, 1961.
MLA-Zitierstil (9. Ausg.)International Navigation Congress Baltimore, Md. XXe Congrès International De Navigation: = Sect. 1, Inland Navigation; 1, Subject Criteria for the Economic Justification of New Inland Navigable Waterways or the Improvement of Existing Ones. General-Secretariat P.I.A.N.C, 1961.