Writing and Printing
Ca is the sixth consonant of Indic abugidas. In modern Indic scripts, ca is derived from the early "Ashoka" Brahmi letter , which is probably derived from the North Semitic letter tsade (reflected in the Aramaic , "ts"), with an inversion seen in several other derivatives, after having gone through the Gupta letter .
Duke University Press.
Fremont Older.
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