Republic of South Africa2025-09-172025-09-171964http://hdl.handle.net/20.500.11837/3163Air photography 1953. Surveyed in 1963 and drawn in 1964 by the Trigonometrical Survey Office. Mean magnetic declination of sheet 20.7 degrees West of True North (1964.0). Mean annual change 5 degrees westwards (1953-1961). Printed and published in the Republic of South Africa by the Government Printer.enMap