Natural science through the seasons ; 100 teaching units.
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| Format: | Book |
| Language: | English |
| Published: |
Toronto :
Macmillian Co. of Canada,
[1946]
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| Subjects: |
| Item Description: | "General reading references": pages 511-514. |
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| Physical Description: | xxi, 520 pages : illustrations ; 24 cm. |