Standard Tecnici: Codici – Carte
Illustrated Guidelines for Rehabilitating Historic Buildings-Index. The Secretary of the Interior is responsible for establishing standards for all programs under Departmental authority and for advising Federal agencies on the preservation of historic properties listed in or eligible for listing in the National Register of Historic Places.
Guidelines for the Care of Natural History Collections. The Society for the Preservation of Natural History Collections. Improving preservation, conservation and management of natural history collections to ensure their continuing value to society.