http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a subfile of the NIOSH registry of toxic effects of chemical substances
Subfile of the NIOSH registry of toxic effects of chemical substances
A subfile of the registry of toxic effects of chemical substances
National Institute for Occupational Safety and Health
Prepared under contract number 210-75-0034 by Tracor Jitco, Incorporated.
"Agriculture chemicals and pesticides: a subfile of the registry of toxic effects of chemical substances"--cover title.