Biologist with a Microscope. Elderly Scientist Professor with Glasses. Portrait of a Man Stock Vector - Illustration of laboratory, chemistry: 130482507
The microscope and its revelations. FIG. 191.—Watsons school microscope (1899). 240 THE HISTORY AND DEVELOPMENT OF THE MICROSCOPE i|ii;ilit v. .-mil i> thoroughly well made, its object being to meet thev;int>
1940s Man Scientist Using Microscope Photograph by Vintage Images - Pixels