The Crucible By Arthur Miller Background p. 1230 – 1231 Act I p. 1234-1263 Act II p. 1267- 1287 Act III p. 1291-1315 Act IV p. 1319-1334.
ISO/TC 211 Geographic information/Geomatics PT19150 – Ontology Overview and Introduction to PT19101rev – Reference Model Jean Brodeur ISO/TC 211 PT19150.