By Dennis, Norman, Erdos, George, Halsey, A. H.
By Halsey, Kay
By Graham, Elaine, Halsey, Margaret
By Chin-Lee, Cynthia, Halsey, Megan, Addy, Sean
By Halsey, C.S.
By Wild, JOHN J, Subramanyam, K. R., Halsey, Robert F.
By Halsey, Kay (Edited By.)
By Halsey, A. H.
By Karabel, Jerome, Halsey, A. H.
By Halsey, Mark, Ridley, Ian
By Ford, D.Anderson, Halsey, M.D.
By Herreschoff, Halsey
By Lauder, Hugh, Brown, Phillip, Dillabough, Jo-Anne, Halsey, A. H.
By Halsey, A. H., Lauder, Hugh, Brown, Phillip, Wells, Amy Stuart
By Halsey, A. H., Heath, A.F., Ridge, J.M.