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20
|
171
|
15
|
16
|
47
|
|
c1800
|
1800
|
1800–1820
|
1800–1850
|
1820–1880
|
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|
147
|
175
|
74
|
51
|
167
|
|
1820
|
1825
|
1830
|
c1830
|
1840
|
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56
|
279
|
254
|
191
|
136
|
|
1841
|
1843–1848
|
1845–1855
|
1848
|
c1850
|
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|
266
|
59
|
161
|
202
|
227
|
|
c1850
|
1850–1880
|
1850
|
1850
|
1850
|
Blue highlighting identifies featured microscopes
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