00582nam a22002057a 4500 OSt 20170518103804.0 170321b xxu||||| |||| 00| 0 eng d MMU MMU MMU eng premarc BC135 .L35 1953 164 Langer, Susanne Katherina Knauth, 1895-1985. An introduction to symbolic logic. 2d ed. (rev.) New York, Dover Publications [1953] 367 p. illus. 21 cm. Logic, Symbolic and mathematical. lcc LOAN LOAN 25580 25580