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1
by Abadin, Henry, Spoo, Wayne
Published 1998
Agency for Toxic Substances and Disease Registry
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2
by Wilbur, Sharon B., Harris, Olivia, McClure, Peter Roger, Spoo, Wayne
Published 1999
Agency for Toxic Substances and Disease Registry
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3
by Keith, Sam, Murray, H. Edward, Spoo, Wayne
Published 1999
Agency for Toxic Substances and Disease Registry