| author | Ontario. Ministry of Education |
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| download | pg26139.pdb (232K) |
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| language | English |
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| categories | Nature study
Science -- Study and teaching (Elementary) -- Ontario
LB: Theory and practice of education
Q: Science (General) |
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| copyright status | Public domain in the USA. |
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| source | Project Gutenberg
EBook #26139
2008-07-28 |
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