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Author: Ormeling jnr. F. J. Brown A.
Publisher: Maney Publishing
ISSN: 1743-2774
Source: The Cartographic Journal, Vol.12, Iss.1, 1975-06, pp. : 15-16
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The Cartographic Journal, Vol. 15, Iss. 2, 1978-12 ,pp. :
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The Cartographic Journal, Vol. 14, Iss. 2, 1977-12 ,pp. :
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The Cartographic Journal, Vol. 13, Iss. 2, 1976-12 ,pp. :
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The Cartographic Journal, Vol. 4, Iss. 1, 1967-06 ,pp. :