The global carbon cycle is now usually divided into the following major reservoirs of carbon interconnected by pathways of exchange: 1  The atmosphere. 2  The terrestrial biosphere. 3  The oceans, including dissolved inorganic carbon and living and non-living marine biota.
Elizabeth Blackwell: First Woman M.D. (Barnard Biography Series, Vol. 2) Mar 1, 1997
PBS: How Elizabeth Blackwell became the first female doctor in the U.S. Elizabeth Blackwell's Struggle to become a Doctor; Books: Blackwell, Elizabeth. Pioneer Work in Opening the Medical Profession to Women: Autobiographical Sketches by Dr. Elizabeth Blackwell. London: Longmans, Green, and Co., 1895. Kline, Nancy. Elizabeth Blackwell: A Doctor's Triumph. Berkeley: Conari Press, 1997.