# Hydrographic manual

> Washington, U. S. Govt. Print. Off., 1942.

**Wikidata**: [Q51422851](https://www.wikidata.org/wiki/Q51422851)  
**Source**: https://4ort.xyz/entity/hydrographic-manual


## References

1. Biodiversity Heritage Library
2. Internet Archive
3. Library of Congress Online Catalog
4. [Fatcat](https://api.fatcat.wiki/v0/release/2k4vcz6govgevg7swmtta6hvne)