Search Results       Your search for [subject]Proposition (Logic) -- History -- 20th century returned 1 record.           Russell's hidden substitutional theory. by Landini, Gregory; New York: Oxford University Press, 1998. Subject: Russell, Bertrand, -- 1872-1970; Proposition (Logic) -- History -- 20th century; Logic, Symbolic and mathematical -- History -- 20th century.          Add to Book Cart Relevance: 31.68%