Mărește rezoluția imaginii(1.178 × 1.484 pixeli, mărime fișier: 574 KB, tip MIME: image/jpeg)

Acest fișier se află la Wikimedia Commons. Consultați pagina sa descriptivă acolo.

Descriere fișier

Descriere
English: Marshall McDonald (October 18, 1835 – September 1, 1895) was an American engineer, geologist, mineralogist, and fisheries scientist. McDonald served as the commissioner of the United States Commission of Fish and Fisheries from 1888 until his death in 1895. He is best known for his inventions of a number of fish hatching apparatuses and a fish ladder that enabled salmon and other migrating fish species to ascend the rapids of watercourses resulting in an increased spawning ground. McDonald's administration of the U.S. Commission of Fish and Fisheries was notably free of scandal and furthered the "protection and culture" of fish species throughout the United States.
Dată Dată necunoscută
Unknown date
Sursă The Glengarry McDonalds of Virginia
by Mrs. Flora McDonald Williams. Published 1911 by Geo. G. Fetter Company.
Autor NecunoscutUnknown author

Licențiere

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Hon._Marshall_McDonald.jpg

Istoricul fișierului

Apăsați pe Data și ora pentru a vedea versiunea trimisă atunci.

Data și oraMiniaturăDimensiuniUtilizatorComentariu
actuală10 iulie 2013 17:01Miniatură pentru versiunea din 10 iulie 2013 17:011.178x1.484 (574 KB)JbartaUser created page with UploadWizard

Următoarele pagini conțin această imagine:

Utilizarea globală a fișierului