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provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:371598399
rdf:type
prov:Entity
prov:value
ilise the housing when it is disposed underground, and the housing including a removable cover engageable with the tubular body at said one end for selectively closing said one end.
prov:wasQuotedFrom
n4:fr
Subject Item
isap:224363243
prov:wasDerivedFrom
isa:371598399