No type definition was found for "volume" in the ggbn import.
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Notes: this element can be used for DNA or tissue samples
in ABCD this element has stringUnit as attribute (example µl, ml)
in DarwinCore this element has to be used together with ggbn:volumeUnit
Example(s): 30, 150
Constraints in the context of GGBN Data Standard:
- cardinality 0..1 (=optional single occurrence)