Defines topology, the study of continuity, and covers such topics as the shortest Moebius strip, the Klein bottle, and the projective plane

A collection of more than 525 mathematical, historical, scientific, musical, and linguistic brain teasers and riddles.

Product Description: Over 60 baffling brain benders: Two Glasses of Port, Wolf in Sheep’s Compound, The Infinite Chessboard, Bughouse Binary, more. Answers. (view table of contents, read Amazon.com's description)

Product Description: Our future can turn out in one of several ways, and it is humanity that must make the decision of which one it will be. Only one will be truly to mankind's advantage. Why this is so is the thrust of Our Ending Dark Age. Its premise is that when humans began using tools, we began to separate from nature...read more

Product Description: A current, comprehensive review of infectious diseases for the small animal practitioner! Topics will include: canine leptospirosis, canine parvovirus, lyme disease, ehrlichia/anaplasma, canine influenza, molecular diagnostic assays for infectious diseases in cats, bartonella, feline hemotropic mycoplasma, antifungal treatment, antiviral therapy for feline herpes virus infections, canine babesiosis, and more...read more

     In the tradition of Margaret Wise Brown, Mary Lyn Ray presents a hushed picture book about the rhythm of the natural world on a small farm as all creatures prepare for sleep. Artist Christopher Silas Neal's classic illustrations quiet even the most restless little night owls with familiar childlike imagery and the comforts of routine. All is well, it reminds them. Now is the time for dreams.