Simplified signs. Volume 1, Principles, background, and application : a manual sign-communication system for special populations - Bonvillian, John D.; Nelson-Metlay, Val (Cambridge, England : Open Book Publishers, 2020)
Description based on print version record.
Electronic reproduction. Ann Arbor, MI : ProQuest, 2018. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries.
Keywords: Sign language; Electronic books