TY  - RPRT
TI  - A preliminary annotated bibliography on siliceous algal cysts and scales
AU  - David P. Adam
AU  - Albert D. Mahood
PY  - 1979
DO  - 10.3133/ofr791215
UR  - https://pubs.usgs.gov/publication/ofr791215
ID  - ofr791215
ER  -