Laycock, Donald C.Wurm, Stephen A.Wurm, S. A.2021-12-012021-12-01858831597PL-C40.195http://hdl.handle.net/1885/253046application/pdf© 1977 Donald C. Laycock, Stephen A. Wurmhttp://creativecommons.org/licenses/by-sa/4.0Observations on Language Change in Parts of the New Guinea Area197710.15144/PL-C40.195 2021-12-01Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)