Aha! Insight by Martin Gardner - January 1978

Scientific American, Incorporated. Used - Good. Used book that is in clean, average condition without any missing pages.

Scientific American. Used - Good. Good condition. Slightly dampstained.

Scientific American, Incorporated. Used - Good. Used book that is in clean, average condition without any missing pages.

Scientific American, 1978. Paperback. Good. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed.

Scientific American, Incorporated. Used - Very Good. Used book that is in excellent condition. May show signs of wear or have minor defects.

Scientific American. Used - Good. Good condition. A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains.

Scientific American, 0000-00-00. paperback. Used: Good.

Scientific American, 1978T. paperback. Acceptable. 0.7283 in x 8.4291 in x 5.8504 in. This is a used book. It may contain highlighting/underlining and/or the book may show heavier signs of wear . It may also be ex-library or without dustjacket.

Scientific American, 1978. Third. Trade Paperback. Very Good, slight wear on edges.

Scientific American, January 1978. Unknown. Used - Very Good. This copy is in excellent condition. The pages are clean & crisp and the binding is uncreased like new. There is some fading to the white portion of the cover, and a store label & stamp inside. No other marks, rips, tears, stains or writing. Ready to ship with delivery confirmation.