{"tema_id":"2733","string":"Petrochemie","created":"1970-01-01 00:00:00","code":null,"notes":[{"@type":"Scope note","@lang":"de","@value":"Gewinnung von Chemikalien aus Erd\u00f6l und Erdgas "},{"@type":"Entstehungsgeschichte","@lang":"de","@value":"1970 "}]}