It may be a PFOS, but we don't know.
On November 6th, 2006. See this statement in context.
On November 6th, 2006. See this statement in context.
November 6th, 2006 / 5:05 p.m.
Director, Policy, Environmental Defence Canada
It may be a PFOS, but we don't know.
See context to find out what was said next.