Index of /pdf/soroban
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   DIR /pdf
       1964_Soroban_General_Catalog.pdf
       Soroban_Computeriter_Coder_Unit_Technical_Manual_Mar1963.pdf
       Soroban_Computeriter_Decoder_and_Power_Unit_Adjustment_and_Lubrication_Procedures_Feb1961.pdf
       Soroban_FK-2_Automatic_Coding_Keyboard_Tecnical_Manual_1963.pdf
       Soroban_GP-2-300P_High_Speed_Tape_Perforator_Technical_Manual_Jul1965.pdf
       Soroban_Product_Brochure.pdf