Source
Ligatus, Schema (2007)
Ligatus (2007), Printed Books Survey Schema (version 1.8), XML. http://www.ligatus.org.uk/stcatherines/sites/ligatus.org.uk.stcatherine… (accessed April 2015)
Ligatus (2007), Printed Books Survey Schema (version 1.8), XML. http://www.ligatus.org.uk/stcatherines/sites/ligatus.org.uk.stcatherine… (accessed April 2015)