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If your interest is to access metadata for a large amount of items, we recommend looking into our dataset download via FTP/HTTP or OAI-PMH offers. Considering that the latter offers are structured per dataset, we recommend using the Search API to identify all the items that you are looking for and faceting using the “edm_datasetName“ to identify the respective datasets. Once you have done this, you will be able to easily download or harvest the metadata in bulk and filter out the items that you need (after downloading).