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Applied Optics and Optical Design, Part One and fording rivers"For the optical engineer it is an indispensable work." Journal, Optical Society of America "As a practical guide this book has no rival." Transactions, Optical Society "A noteworthy contribution," Nature (London) Part I covers allordinary ray tracing methods, together with the complete theory of primary aberrations and as much of higher aberration as is needed for the design of telescopes, low power microscopes and simple optical systems. Chapters: