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| Preview | Title | Abstract | Subject | Date from | Date to | Type |
|---|---|---|---|---|---|---|
 | Abstract: - Subject: observation instruments Date from: 1800 Date to: - Type: Life indoors; life indoors |
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| Preview | Title | Abstract | Subject | Date from | Date to | Type |
|---|---|---|---|---|---|---|
| Abstract: - Subject: observation instruments Date from: 1800 Date to: - Type: Life indoors; life indoors |