Boron, arsenic, and antimony, among other substances, are used as dopants when added to a pure semiconductor material to alter its electrical characteristics.
Artificially produced gemstones[?] (such as Ruby (gemstone)) usually contain a dopant to identify them as such.
... (AS or Secret Army) - Gaullist resistance group of Charles Delestraint[?].
Bureau d'Opérations Aériennes[?] (BOA) - Service for arranging cland ...