drainageBegan

URI: https://gptkb.org/prop/drainageBegan
4 triples
GPTKB property
Random triples
Subject Object
gptkb:The_Bedford_Level 17th century
gptkb:Lago_de_Texcoco 17th century
gptkb:Great_Black_Swamp mid-19th century
gptkb:Pontine_Marshes 1928