TY  - RPRT
TI  - Recent gastropod boreholes and Ordovician cylindrical borings
AU  - M.R. Carriker
AU  - E. L. Yochelson
PY  - 1968
DO  - 10.3133/pp593b
UR  - https://pubs.usgs.gov/publication/pp593B
ID  - pp593B
ER  -