TY  - RPRT
TI  - Volume XII: Fresh-water rhizopods of North America
AU  - Ferdinand Vandeveer Hayden
AU  - Joseph Leidy
PY  - 1879
DO  - 10.3133/70038962
UR  - https://pubs.usgs.gov/publication/70038962
ID  - 70038962
ER  -