Ixopo_3030AA
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Date
1980
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Fort Hare
Abstract
Air photography 1959 Job No.443/63). Surveyed in 1968 and drawn in 1970 by the Trigonometrical Survey Office. Mean magnetic declination of sheet 21.1 degrees West of True North (1969.0). Mean annual change is 6 degrees westwards (1966). Printed and published in the Republic of South Africa by the Government Printer.