| Physical media | https://walrus.wr.usgs.gov/infobank/p/p188ar/html/p-1-88-ar.container.html |
|---|---|
| Public files | (Not specified) |
| Activity | Equipment |
|---|---|
| P188AR | pistoncore Shelby tubes (thin-walled metal tubes); split barrel samplers (split spoons - thick walled metal tubes); "O" samplers (split spoon with a liner) |