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by Consolmagno, Guy; Davis, Dan M.
by Dan M. Guy; D. R. Carmichael
by Guy, Dan M.; Carmichael, D. R.; Whittington, O. Ray
by Guy, Dan M.
by Guy, Dan M.; Alderman, C. Wayne
by Guy, Dan M.; Carmichael, D. R.
by Guy Consolmagno , Dan M. Davis
by Dan M. Guy; D. R. Carmichael; Linda A. Lach