TY  - RPRT
TI  - An annotated key to the identification of commonly occurring and dominant genera of algae observed in the phytoplankton of the United States
AU  - Phillip E. Greeson
PY  - 1982
DO  - 10.3133/wsp2079
UR  - https://pubs.usgs.gov/publication/wsp2079
ID  - wsp2079
ER  -