TY  - BOOK
AU  - IOC
TI  -  Standard and Reference Materials for Marine Science  IOC Manuals and guides No.25 
PY  - 1993///,
CY  - Paris
PB  - UNESCO
UR  - http://ioc-unesco.org/index.php?option=com_oe&task=viewDocumentRecord&docID=878
ER  -