Vocation : Writers : Textbook/ Non-fiction

Oswald Andrew "Ozzy" Bushnell (11 May 1913 – 21 August 2002) was a microbiologist, historian, novelist, and professor at the John A. Burns School of Medicine at the University of Hawaiʻi at Mānoa.

Isabella Aiona Abbott (June 20, 1919 – October 28, 2010) was an educator, phycologist, and ethnobotanist from Hawaii. The first native Hawaiian woman to receive a PhD in science, she became a leading expert on Pacific marine algae.

Wilhelm Emil Fein (16 January 1842 – 6 October 1898) was a German inventor. He invented the worldwide first portable electric drill.

Eduard von Martens (18 April 1831 – 14 August 1904) also known as Carl or Karl Eduard von Martens, was a German zoologist.Born in Stuttgart in 1831, von Martens attended university in Tübingen, where he graduated in 1855. He then moved to Berlin, where he would be based for the remainder of his career, both at the Zoological Museum of the Berlin University (from 1855) and, from 1859 on, at the Museum für Naturkunde.In 1860, he embarked on the Thetis expedition of the Prussian expedition to Eastern Asia. When the expedition returned to Europe in 1862, von Martens continued to travel around Maritime Southeast Asia for 15 months. He published the results of the "Thetis" expedition in two volumes, constituting the Zoologischer Theil of the "Preussische Expedition nach Ost-Asien." Vol. ii, consisting of 447 pages and 22 plates, contained a very full account of the land molluscs.
Back in Berlin, von Martens was curator of the malacological and other invertebrate sections until his death.Von Martens described 155 new genera (150 of them molluscs) and almost 1,800 species (including around 1,680 molluscs, 39 crustaceans, and 50 echinoderms).
He was a foreign member of the Linnean Society of London, and a corresponding member of the Zoological Society of London.

Karl Frankenstein (Hebrew: קרל פרנקנשטיין; 16 February 1905 – 22 January 1990) was an Israeli professor in special education and pedagogy.

Julius August Christoph Zech (24 February 1821 Stuttgart, Germany − 13 July 1864 Berg) was a German astronomer and mathematician.
In 1849, Zech published a table of logarithms; as a result, Zech logarithms for finite fields are named after him.
In 1863, Zech attended the founding meeting of the Astronomische Gesellschaft (German Astronomical Society) and became its Vorstand (chairman). Friedrich Wilhelm Argelander assumed this role upon Zech's death..

Julius Ludwig Friedrich Weizsäcker (13 February 1828 in Öhringen – 3 September 1889 in Bad Kissingen) was a German historian. He specialized in medieval history and early modern history. A member of the distinguished Weizsäcker family, his brother was the Protestant theologian Karl Heinrich Weizsäcker.
He studied theology and history at the University of Tübingen, obtaining his habilitation in 1859. He was successively a professor of history at the universities of Erlangen (from 1863), Tübingen (from 1867), Strasbourg (from 1872), Göttingen (from 1876) and Berlin (from 1881).