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by Barker, William C.; Barker, Elaine; U.s. Department of Commerce; et al.
by National Institute of Standards and Technology, U.s. Department of Commerce; Barker, William C.; Ferraiolo, Hildegard
by Ryken, Philip Graham; Guelzo, Allen C.; Barker, William S.; et al.
by Kamensky, John M.; Morales, Albert; Gansler, Jacques S.; et al.
by Barker, William C.