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by Philip B. Meggs (Richmond, VA and Virginia Commonwealth University ); Alston W. Purvis (Boston University, Boston, MA )
by De Jong, Cees W.; Purvis, Alston W.; Tholenaar, Jan
by De Jong, Cees W.; Tholenaar, Jan; Purvis, Alston W.
by Purvis, Alston; De Jong, Cees W.
by Alston W. Purvis
by Le Coultre, Martijn F.; Purvis, Alston W.
by Meggs, Philip B.; Purvis, Alston W.
by Le Coultre, Martijn F.; Lupton, Ellen; Purvis, Alston W.; et al.
by Purvis, Alston W.
by De Jong, Cees W.; Purvis, Alston W.; Tholenaar , Jan