SYMBOLS + SYMBOLISM (PHILOSOPHICAL LOGIC)
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BTLOGISTIC + SYMBOLIC LOGIC (PHILOSOPHICAL LOGIC)
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UDC16,140.2
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Descriptor GERSYMBOLIK + ZEICHEN (PHILOSOPHISCHE LOGIK)
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Descriptor ENGSYMBOLS + SYMBOLISM (PHILOSOPHICAL LOGIC)
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Descriptor FRESYMBOLIQUE + SYMBOLES + SIGNES (LOGIQUE PHILOSOPHIQUE)
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Variant GERZEICHEN (PHILOSOPHISCHE LOGIK)
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Variant GERNAMEN (PHILOSOPHISCHE LOGIK)
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Variant ENGSYMBOLISM (PHILOSOPHICAL LOGIC)
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Variant ENGLOGICAL SYMBOLS (PHILOSOPHICAL LOGIC)
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Variant ENGSYMBOLS/LOGICAL SYMBOLS (PHILOSOPHICAL LOGIC)
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Variant FRESYMBOLES (LOGIQUE PHILOSOPHIQUE)
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Variant FRESIGNES (LOGIQUE PHILOSOPHIQUE)