Worlds within worlds : a journey into the unknown /
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| Other Authors: | |
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| Format: | Book |
| Language: | English |
| Published: |
London :
Secker and Warburg,
1977.
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| Subjects: |
| Physical Description: | 208 p. : ill., (some col.), col. charts, maps (chiefly col.) ; 28 cm. |
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| ISBN: | 0436273403 : 0436273411 |