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The search engine searches for all available materials by default. On the search results page you will be able to narrow down the results to the type of material, category and sub-category. If you want to search through a particular archive, select it and start looking for. You can also go to the advanced search engine or just browse collections.
Choose document type
Select historical period
Ewidencja przyjętych wynalazków, udoskonaleń i usprawnień
