The observer's book of British ferns : describing forty-five species.
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| Format: | Book |
| Language: | English |
| Published: |
London, New York :
F. Warne,
[1961]
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| Series: | Observer's pocket series ;
12. |
| Subjects: |
| Physical Description: | 127 pages : illustrations (part color) ; 15 cm. |
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