TY  - RPRT
TI  - Photoglossary of Marine and Continental Ichnofossils
AU  - Stephen T. Hasiotis
AU  - Thomas M. Bown
AU  - C. C. Abston
PY  - 1994
DO  - 10.3133/ds23
UR  - https://pubs.usgs.gov/publication/ds23
ID  - ds23
ER  -