Calder, Dale R. (2015). FRB: Thecate hydroids from the shelf waters of northern Canada. Version 1 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital http://www.iobis.org/. Accessed on –INSERT DATE, more
Calder, Dale R. (2016). Abundance of hydroids in a mangrove ecosystem at Twin Cays, Belize, Central America. Version 1 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital http://www.iobis.org/. Accessed on –INSERT DATE, more
Calder, Dale R. (2016). Biotic Census of Cape Cod Bay 1965-1969: Hydroids. Version 1 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital http://www.iobis.org/. Accessed on –INSERT DATE, more
