operationalFrom

URI: https://gptkb.org/prop/operationalFrom
6 triples
GPTKB property
Random triples
Subject Object
gptkb:Overland_Telegraph_Route 1872
gptkb:Greenwich_Observatory_transit_circle 1851
gptkb:Dowding_System_(air_defense_system) 1939
gptkb:AMES_Type_1 1938
gptkb:Long_Range_Navigation_A 1942
gptkb:Batterie_Lindemann 1942