||001||,||Classification||,||Economics||,||N||
||001||,||Classification||,||Trends||,||Y||
etc...
it looks like you should be able to read it using COPY command.
something like:
copy some_table from stdin with delimiter ',' csv quote '||';
depesz
||001||,||Classification||,||Economics||,||N||
||001||,||Classification||,||Trends||,||Y||
etc...