researchedSince

URI: https://gptkb.org/prop/researchedSince
4 triples
GPTKB property
Random triples
Subject Object
gptkb:Organization_of_Memory 1960s
gptkb:Blood_Substitute gptkb:19th_century
gptkb:Blended_Wing_Body 1990s
gptkb:Artificial_Blood 1980s