URI:
       Index of /pdf/varian/brochures
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   DIR /pdf/varian
       Analog_Input_Modules_197211.pdf
       Analog_Output_Modules_197301.pdf
       Analog_Power_Supply_197109.pdf
       Analog_to_Digital_Converter_197109.pdf
       Digital_Input_Module_197101.pdf
       Digital_Output_Module_197109.pdf
       Multiplexer_Modules_197301.pdf
       Software_for_Input_Output_Modules_197112.pdf