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by Harper, Stephen
by Harper, Allen; Regalado, Daniel; Linn, Ryan; et al.
by Quaye, Stephen John; Harper, Shaun R.; Pendakur, Sumun L.
by HARPER, STEPHEN J.
by Harper, Stephen J.
by Harper, Stephen C.
by Edited by John D. Barrow , Simon Conway Morris , Stephen J. Freeland , Charles L. Harper, Jr
by Harper, Marjory; Constantine, Stephen
by Barrow, John D.; Morris, Simon Conway; Freeland, Stephen J.; et al.