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by Hilliard, David C.; Welch, Joseph Nye, II; Widmaier, Uli
by Welch, David
by Fitzgerald, David; Hasselstrom, Linda; Welch, James
by Nye, Joseph S., Jr.; Welch, David A.
by Welch, Graham F.; Howard, David M.; Nix, John
by Ann Weidmann; David Waller; Alex Hadwen-Bennett; et al.
by Welch, David B., Ph.D.