Republic of South Africa2025-09-172025-09-171970http://hdl.handle.net/20.500.11837/3167Air photography 1963. Surveyed in 1969 and drawn in 1969 by the Trigonometrical Survey Office. Mean magnetic declination of sheet is 21.7 degrees West of True North. Mean annual change is 4 degrees westwards (1961-1966). Printed and published in the Republic of South Africa by the Government Printer.enMap