What is common between Arvid E. Gillstrom a Swedish and  Bernard Vorhaus?
Bernard Vorhaus Bernard Vorhaus (December 25, 1904 – November 23, 2000) was an American film director born in New York City.
Per Alström Per Johan Alström (born 9 April 1961) is a Swedish docent of systematics and evolutionary research. He researches in taxonomy, systematics, and evolution as a part-time work, with birds in Asia as a specialty. Alström works at the data bank ("Artdatabanken") at the Swedish University of Agricultural Sciences, but has previously worked at Uppsala University and the Swedish Museum of Natural History. He is chairman of the "Committee for Swedish Animal's Names" and Swedish local point for the Global Taxonomy Initiative.