P O http://iconclass.org/47G53%28%2B121%29

clay and sand, etc. ~ building material (+ on irrigated fields)

TTL NT
S P O skos:broader
S P O http://iconclass.org/47G53%28%2B12%29
S P O skos:prefLabel
S P O clay and sand, etc. ~ building material (+ on irrigated fields)