Senning A., . (1972). Sulfur in organic and inorganic chemistry. V 3. New York: Marcel Dekker.
Senning Alexander, . 1972. Sulfur in organic and inorganic chemistry. V 3. New York: Marcel Dekker.
Senning Alexander, . Sulfur in organic and inorganic chemistry. V 3. New York: Marcel Dekker. 1972.
