[compiled by Technical Committee 15, Insulating Materials, of the Swiss Electrotechnical Committee under the auspices of the International Electrotechnical Commission]
written by Andrew Payne, John Milne and Richard Maher ; produced by David Wimbury and Jack Stoller ; directed by Colin Gregg, George Case, Martin Hutchings and Lawrence Gordon Clark
Negod-Gwad Productions presents ; in co-production with the Ghana National Commission on Culture, Diproci of Burkina Faso, NDR/WDR Television in association with Channel 4 ; a film by Haile Gerima ; writer, director, editor, Haile Gerima ; produced by Haile Gerima
Humble Pie Entertainment ; HeartLines in association with SABC Education presents a Curious Pictures production; produced by Harriet Gavshon, Mariki Van der Walt ; directed by John Trengove ; head writer, John Trengove ; written by Darrel Bristow-Bovey ... [and others]