by Antonio Bultrini , Francesco Giumelli , Clara Portela , Mirko Sossai
Canada. Legislature. Legislative Assembly.
United States. General Accounting Office
![[William Wheeler Hubbell, authorized to apply for patents.]](https://covers.openlibrary.org/b/id/10200621-M.jpg)
United States. Congress. Senate. Committee on Patents
United States
United States
Kokuritsu Kokkai Toshokan (Japan)