The product is a paperback book titled "Locke's Essay Concerning Human Understanding Books 2 & 4" published in 1906 by Open court publishing. Written by John Locke in English, the book falls under the subject of Science & Medicine. With a softcover binding, the ancient and collectible item provides valuable insights into the realm of scientific thought and understanding. Paperback book is in good condition. Please see all photos. Philosophical classics. Religion of science, Library number 58.