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| drwxr-xr-x | - | astronomy | treehistory |
| drwxr-xr-x | - | biology | treehistory |
| drwxr-xr-x | - | chemistry | treehistory |
| drwxr-xr-x | - | computer-architecture | treehistory |
| drwxr-xr-x | - | electronics | treehistory |
| drwxr-xr-x | - | geometry | treehistory |
| drwxr-xr-x | - | logic | treehistory |
| drwxr-xr-x | - | machine-learning | treehistory |
| drwxr-xr-x | - | math | treehistory |
| drwxr-xr-x | - | misc | treehistory |
| drwxr-xr-x | - | molecular-dynamics | treehistory |
| drwxr-xr-x | - | physics | treehistory |
| drwxr-xr-x | - | programming | treehistory |
| drwxr-xr-x | - | robotics | treehistory |