1923 introductions

gesture that was used as a greeting in Nazi Germany

screening test used to detect potentially pre-cancerous and cancerous processes in the endocervical canal

Russian folk handicraft

Christmas tree in Washington, DC, United States

Belgian cigarette brand owned and manufactured by British American Tobacco

romanization scheme for Arabic and Persian words, used in Bahá'í literature

theorem on finite-dimensional unital real non-associative algebras endowed with a positive-definite quadratic form

seismometer developed by Harry Oscar Wood & John August Anderson

rose cultivar