- 1Reference: IG6/7/4/8
Title: Intercom Vol IV. No 8 Includes: - Foreword by R K Fleming focusing on the changes made following t...
Level of description: item
Date Free Text: August 1951
Production date: From: 1951 To: 1951 - 2Reference: IG6/8/2/203
Title: Intercom no.203
Level of description: item
Date Free Text: March/April 1965
Production date: From: 1965 To: 1965