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(19,881 - 19,900 of 19,930)
Pages
- Title
- Worker checking experiment box
- Description
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Winter, 1948
- Title
- Worker checking humidity of sugar bush
- Description
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Fall, 1948
- Title
- Worker collecting data
- Description
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Winter, 1955
- Title
- Worker collecting data
- Description
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Winter, 1948
- Title
- Worker collecting data
- Description
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Winter, 1955
- Title
- Worker collecting data at sugar maple
- Description
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Winter, 1948
- Title
- Worker collecting data in sugar bush
- Description
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Fall, 1948
- Title
- Worker collecting data in the sugar bush
- Description
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Winter, 1955
- Title
- Worker collecting maple sap
- Description
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Winter, 1952
- Title
- Worker digging a collection bucket out of the snow
- Description
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Winter, 1956
- Title
- Worker in the sugar bush
- Title
- Worker on tractor
- Description
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Winter, 1955