Niels Viggo Ussing

Niels V. Ussing; Ussing N V; N.V. Ussing; N. V. Ussing

14. Juni 1864 – 23. Juli 1911

geologist, mineralogist

professor of mineralogy, University of Copenhagen, Denmark

http://www.wikidata.org/entity/Q6220656

Kingdom of Denmark