International hydrographic bulletin.

Manylion Llyfryddiaeth
Awdur Corfforaethol:	International Hydrographic Bureau
Fformat:	Continuing Resource
Iaith:	Saesneg
Cyhoeddwyd:	Monaco [etc.] International Hydrographic Bureau.
Pynciau:	Hydrography > Periodicals. Hydrography.