TY  - RPRT
TI  - Foraminifera from the Arctic Slope of Alaska; general introduction and Part 1, Triassic foraminifera
AU  - Helen Tappan
PY  - 1951
DO  - 10.3133/pp236a
UR  - https://pubs.usgs.gov/publication/pp236A
ID  - pp236A
ER  -