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<http://webisa.webdatacommons.org/214747562>	<http://www.w3.org/ns/prov#value>	"The second metal salt is nickel sulfate in an amount of from about 15 to 30 grams per liter, along with a reducing agent, such as formaldehyde, in an amount of from about 400 to 550 cc. per liter." .
<http://webisa.webdatacommons.org/214747562>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/68185385>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/214747562> .