... vol. 2, ser. 1. Sofia 1988, p. 885. 16 BHA-CMNL, coll. 219-b, au 9, f. 1–43; au 60, f. 1–50. ... For example, Theodora Raikowa-Kowatschewa, as a member of the German Chemical Society, presented three articles in the Berichte der Deutschen Chemischen Gesellschaft, and ...