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1
Q23923481-31B9E8CF-C100-4163-AD5A-FF6C8388E952
Q23923481-31B9E8CF-C100-4163-AD5A-FF6C8388E952
BestRank
Statement
http://www.wikidata.org/entity/statement/Q23923481-31B9E8CF-C100-4163-AD5A-FF6C8388E952
A comparison of the prevalence of coal workers' pneumoconiosis and respiratory impairment in Pennsylvania bituminous and anthracite miners.
P577
Q23923481-31B9E8CF-C100-4163-AD5A-FF6C8388E952
BestRank
Statement
http://www.wikidata.org/entity/statement/Q23923481-31B9E8CF-C100-4163-AD5A-FF6C8388E952
rank
NormalRank
type
BestRank
Statement
wasDerivedFrom
02806718e8eef6275708d89df837332521b1ea67
P577
1972-12-01T00:00:00Z
http://www.w3.org/2001/XMLSchema#dateTime
P577
bec6d6bb953f8cf9898402ad809b8591