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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY And, JACS is one of publishing's best subscription values! That's right! You pay less per page for JACS—the most widely cited journal in chemistry—than for any other major scientific journal in the world. But don't subscribe to this internationally respected journal because it's inexpensive. Subscribe because you will receive biweekly original research articles that cover ALL chemical research areas . . . together with many concise, up-to-the-minute Communications. Regardless of your major field of interest in chemistry, you'll find an abundance of authoritative and definitive data in each issue that cuts across ALL chemical research areas and is valuable and relevant to your work as well. ORDER your own personal subscription to the number one chemical journal now. CALL TOLL FREE 800/227-5558 Outside U.S. 202/872-4363 Subscription Information: Journal of the American Chemical Society Published biweekly: One volume per year 1989 Volume 111, ISSN: 0002-7863

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(For nonmember rates contact Maruzen, Co., Ltd.) Editor: Allen J. Bard, University of Texas, Austin Board of Editors: S.I. Chan, California Inst, of Tech. · M.A. Fox, Univ. of Texas, Austin · W.R. Gentry, Univ. of Minnesota · J. Halpern, Univ. of Chicago · L.S. Hegedus, Colorado State Univ. · C.R. Johnson, Wayne State Univ. · S.J. Lippard, Massachusetts Inst, of Tech. · R.L. Schowen, Univ. of Kansas · RA.S. Smith, Univ. of Michigan · RJ. Stang, Univ. of Utah · D.G. Truhlar, Univ. of Minnesota · J.K. Whitesell, Univ. of Texas, Austin Editorial Advisory Board: J.A. Berson, Yak Univ. · A.H. Cowley, Univ. of Texas, Austin · W.R DeGrado, E.l. du Pont · C.H. DePuy, Univ. of Colorado · P.B. Dervan, Calif. Inst, of Tech. · G.R. Fleming, Univ. of Chicago · B.O. Fraiser-Reid, Duke Univ. · A . Heller, ATéfT Βείί Labs · W.L. Jorgensen, Purdue Univ. · A.I. Meyers, Colorado State Univ. · L.A. Paquette, Ohio State Uniu · K.N. Raymond, Univ. of California, Berkeley · A.B. Smith, III, Univ. of Pennsylvania · N . Sutin, Brookhaven Natl. Lab · N.J. Turro, Jr., Columbia Univ. · J. S. Valentine, Uniu of California, Los Angeles · C.T.Walsh, Harvard Med. School ·

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