Port statistics : selection, collection and presentation of port information and statistics : manual /
Port statistics : selection, collection and presentation of port information and statistics : manual /
- New York : United Nations, 1971.
- iii, 40 p. ; 28 cm.
- United Nations. Document. TD/B/C.4/79/Rev.1 .
'United Nations publication. Sales no.: E.72.II.D.1.'
Harbors--Statistics.
'United Nations publication. Sales no.: E.72.II.D.1.'
Harbors--Statistics.
