First edition. Fine, fresh, unused copy in equally fine, crisp dust jacket.

First edition. Fine, fresh, unused copy in equally fine, crisp dust jacket. Small prev. own. stamp front pastedown completely hidden by the jacket flap. The 31st book in the "How Did We Find Out...? " series. Hardcover. 61 pp with illustrations. Isaac Asimov traces the development of scientific knowledge about the brain and how it works. This series on the history of scientific discovery for grades 5-8 thoroughly explores the steps that led up to our present knowledge of familiar scientific subjects. Virtually impossible to find in such impeccable condition as these were intended for grammar schoolers as were his similar appearing "How Did We Find Out About..." series.