The Earth, Its Shape, Internal Structure And Composition / The Earths Magnetic Field.
Open University Science Foundation Course Units 22 and 23.
Published by The Open University Press, first published, 1971, reprint 1975, softback, 46 pages with numerous line drawn illustrations in black and white with red highlighting.
Size:- 8.50 x 11.75 inches approx.
Condition:- Good condition with some light wear. Unmarked throughout.
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