You have requested access to download the full text of the source (SourceID: 220517):
Stepanek, J. G.; Kociolek, J. P. (2015). Three new species of the diatom genus Halamphora (Bacillariophyta) from the prairie pothole lakes region of North Dakota, USA. Phytotaxa. 197(1): 27-36, 44 fig., 1 table.