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C H E M I S T S and Chemical Engineers— tyi+iA the. AtiAtaeAA to your questions about organic compounds in

NOLLER S Chemistry of Organic Compounds In remarkably clear, precise and un­ cluttered fashion, this popular book 1—presents today's concepts of struc­ ture, properties and reaction mecha­ nisms of organic materials. 2—indicates method of preparation, in­ dustrial applications and economic significance of each compound. The author has been careful to include a thorough and understandable coverage of such recent developments as : autoxidation and organic peroxides; intermolecular attraction by van der Waal's forces; permanent dipoles, and hydro­ gen bonding; application and inter­ pretation of absorption spectra ; etc. But don't take our word about the book's usefulness to you: see for your­ self. The coupon below will whisk a copy into your hands in just a few days. Thumb your copy through; see how orderly the presentation i s ; how well suited for providing quickly and easily, the answers to the questions you so often have about organic compounds. If you should be willing, at the end of 10 days, to let the book go, ship it back to us. We'll be surprised but we'll cancel your bill right away. Otherwise, your check for $7.50 will close the transac­ tion on a mutually happy note.

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Please send me Copy of Holler's Chemistry of Organic Compounds on 10 day approval $7.50 Name Address

Circle No. 34A-1 on Readers' Service Card, page 45 A

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Quantitative Organic Analysis via Functional Groups. Sidney Siggia. 2nd ed. ix + 227 pages. John Wiley and Sons, Inc., New York, Ν. Υ.,

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