Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:historian
gptkb:writer space historian |
| gptkbp:employer |
gptkb:NASA
|
| gptkbp:field |
spaceflight history
space exploration history |
| https://www.w3.org/2000/01/rdf-schema#label |
David S. F. Portree
|
| gptkbp:language |
English
|
| gptkbp:nationality |
gptkb:American
|
| gptkbp:notableWork |
gptkb:Humans_to_Mars:_Fifty_Years_of_Mission_Planning,_1950–2000
gptkb:Mir_Hardware_Heritage gptkb:NASA's_Origins_Program:_Early_Steps_to_Mars gptkb:Romancing_the_Moon:_The_Untold_Story_of_Lunar_Science |
| gptkbp:occupation |
gptkb:historian
gptkb:writer space historian |
| gptkbp:bfsParent |
gptkb:First_Sun
|
| gptkbp:bfsLayer |
6
|