Statements (4)
| Predicate | Object |
|---|---|
| gptkbp:bfsLayer |
1
|
| gptkbp:bfsParent |
gptkb:Vannevar_Bush
|
| https://www.w3.org/2000/01/rdf-schema#label |
3
|
| gptkbp:release_date |
September 2009
|