This rare and valuable book, titled "Grassi Block Substitution Test for Measuring Organic Brain 1st", is a must-have for any serious collector or researcher in the field of neuroscience. Published in 1970 by Charles C. Thomas and authored by Joseph R. Grassi, A.B., M.A., Ph.D, this hardcover book is in its original form and comes with a dust jacket.

The book contains groundbreaking research on the Grassi Block Substitution Test, which has become a cornerstone in the field of neuroscience. The book is written in English and is a 1st edition, making it even more valuable to collectors. It is a rare find and a great addition to any antiquarian and collectible book collection.