@article {Calder1998a,
	title = {{Some hydroids (Cnidaria: Hydrozoa) from the Mid-Atlantic Ridge in the north Atlantic Ocean}},
	journal = {Zoologische Verhandelingen},
	volume = {319},
	year = {1998},
	pages = {1{\textendash}65},
	issn = {0024-1652},
	author = {Calder, D R and Vervoort, W}
}
