Symbolism in 2020
Life symbols as related to sex symbolism: a brief study into the origin and significance of certain symbols which have been found in all civilisations
by
Goldsmith, Elisabeth
Dream Decoder Journal
by
Cheung, Theresa
A survey of symbolic logic
by
Irving Lewis, Clarence
A survey of symbolic logic
by
Irving Lewis, Clarence
Formal Logic, Or, The Calculus Of Inference, Necessary And Probable
by
de Morgan, Augustus