Метрология и стандартизация
БИБЛИОГРАФИЯ
- https://books.google.com/ngrams/graph?content=%D0%A1%D1%83%D1%8D%D1%86%D0%BA%D0%B8%D0%B9+%D0%BA%D0%B0%D0%BD%D0%B0%D0%BB&year_start=1792&year_end=1937&corpus=25&smoothing=3&share=&direct_url=t1%3B%2C%D0%A1%D1%83%D1%8D%D1%86%D0%BA%D0%B8%D0%B9%20%D0%BA%D0%B0%D0%BD%D0%B0%D0%BB%3B%2Cc0
- https://openlibrary.org
- http://worldcat.org/identities/lccn-n79-107741
- https://www.deutsche-digitale-bibliothek.de/searchresults?isThumbnailFiltered=true&query=rheinland
- https://digitalcollections.nypl.org/search/index?utf8=%E2%9C%93&keywords=Rheinland
- https://catalog.loc.gov