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Microscopic preparation of chalk.
UMG23A01_015

Microscopic preparation of chalk.

Earth observations taken from shuttle Discovery during STS-85 mission
UMG22A39_383

Earth observations taken from shuttle Discovery du...

Students' laboratory of microscopic anatomy
UMG22A22_188

Students' laboratory of microscopic anatomy

Alice Evans in Dairy Division, Department of Agriculture who studes microscopic organisms and their relation to health, flavor and keeping qualities of dairy products ca. between 1913 and 1918
UMG22A11_293

Alice Evans in Dairy Division, Department of Agric...

Magnification of a microscopic dispatch using a projector
UMG21A12_252

Magnification of a microscopic dispatch using a pr...

Funji
UMG20B34_334

Funji

Athropods
UMG20B34_335

Athropods