Blust, RobertRoss, M. D.2021-12-012021-12-01858834073PL-A82.1http://hdl.handle.net/1885/253610application/pdf© 1992 Robert Blusthttp://creativecommons.org/licenses/by-sa/4.0On speech strata in Tiruray199210.15144/PL-A82.1 2021-12-01Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)