French, R. Sign conceptions in medicine from the Renaissance to the early 19th century: Roger French. [Semiotik, 2].(1998).
Chicago-viite (17. p.)French, Roger. "Sign Conceptions in Medicine from the Renaissance to the Early 19th Century: Roger French." [Semiotik, 2].(1998) .
MLA-viite (8. p.)French, Roger. "Sign Conceptions in Medicine from the Renaissance to the Early 19th Century: Roger French." [Semiotik, 2].(1998), .
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