Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Biological_contamination> . }
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- Biological_agent subject Category:Biological_contamination.
- Blackwater_(waste) subject Category:Biological_contamination.
- Genetic_pollution subject Category:Biological_contamination.
- Interplanetary_contamination subject Category:Biological_contamination.
- Smallpox_virus_retention_controversy subject Category:Biological_contamination.
- Category:Biological_hazards broader Category:Biological_contamination.
- Category:Biological_weapons broader Category:Biological_contamination.
- Category:Toxins_by_type_of_organism broader Category:Biological_contamination.