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In addition to a 30-page article on the analysis of pesticides by the thin- layer chromatographic-enzyme inhibi- tion technique, volume 50 contains a ...
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Books for investigating surface stress measurements are reviewed. In addition, this book reports on resonant filtering of the Môssbauer gamma ray and covers treatment of data for surface stress. The text is reproduced from typed copy.

of view" on key questions. The text is reproduced from typed copy.

Residue Reviews, Vol. 50. Francis A. Gunther and Jane Davies Gunther, Eds. xi + 179 pages. Springer-Verlag New York Inc., 175 Fifth Ave., New York, N.Y. 10010. 1974. $18.80

U.S. Government Publications

In addition to a 30-page article on the analysis of pesticides by the thinlayer chromatographic-enzyme inhibition technique, volume 50 contains a cumulative table of subjects covered, a comprehensive and cumulative subject matter index, a cumulative author index (all volumes 41-50), and a cumulative list of volumes 1-50.

Methods of Biochemical Analysis, Vol. 22. David Glick, Ed. viii + 567 pages. John Wiley & Sons, Inc., 605 Third Ave., New York, N.Y. 10016. 1974. $24.95

The contents of this volume include radioimmunoassay of polypeptide hormones and enzymes; newer developments in the determination of cyclic AMP and other cyclic nucleotides, adenylate cyclase, and phosphodiesterase; determination of the activity of succinate, NADH, choline, and «-glycerophosphate dehydrogenases; determination of the activity of phospholipases A, C, and D; recent advances in the separation and analysis of diazopositive bile pigments; determination of iodine in biological material; ultrafilter membranes in biochemistry; microparticulate gel chromatography accelerated by centrifugal force and pressure; and the use of subzero temperatures in biochemistry—slow reac-

tions. This volume also includes cumulative author and subject indexes for Volumes 1-22.

Advances in Environmental Science and Technology, Vol. 3. James N. Pitts, Jr., and Robert L. Metcalf, Eds. ix + 386 pages. John Wiley & Sons, 605 Third Ave., New York, N.Y. 10016. 1974. $19.95

Included in this volume are discussions of lead in the environment; air pollution, morbidity, and mortality and the concept on no threshold; biomedical and social aspects of air pollution; and the economics of air pollution control for used cars. The editors for this series have asked the authors not to be concerned simply with literature surveys, but to give their "points

Uiscosily

This bibliography provides access to a large body of basic knowledge generated by the AEC research and development programs over the past 26 years. It gives for most publications a brief descriptive statement, lists or describes the contents, and indicates the availability. The more than 400 publications are grouped under 13 subject categories. Included are titles from several AEC monograph series. In addition to the technical books and monographs, a section at the end of each subject category lists recent symposium proceedings published as AEC project reports. Title, author, and series indexes are provided.

This t i m e l y collection of papers represents a significant s o u r c e b o o k for the scientist c o n c e r n e d w i t h reliable, u p - t o - d a t e m e t h o d s for d e t e r m i n i n g molecular w e i g h t .

the easy way!

Multi-speed models cover a total range of 1 to 64,000,000 cps for Newtonian and nonNewtonian fluids. Literature available.

Technical Books and Monographs Sponsored by the United States Atomic Energy Commission. TIO-4582-R10. 130 pages. 1974

Polymer Molecular Weight Methods

measured

A typical reading from the dial of a Brookfield Viscometer takes only 30 seconds . . . factor for range and you have an accurate reproducible viscosity measurement directly in centipoise units. There's no guesswork, no timing, no involved calculations. It's the easiest way there is.

Copies of the following are available free from USAEC Technical Information Center, P.O. Box 62, Oak Ridge, Tenn. 37830. Include title and stock number.

ADVANCES IN CHEMISTRY SERIES No. 125 Myer Ezrin, Editor A symposium co-sponsored by the Division of Analytical Chemistry and the Division of Polymer Chemistry of the American Chemical Society.

EXCLUSIVELY

O n e - t h i r d of t h e 2 6 chapters are d e v o t e d t o gel p e r m e a t i o n c h r o m a t o g r a p h y . Others f o c u s o n four exciting new methods: self-beat spectroscopy, thin-layer c h r o m a t o g r a p h y , mass c h r o m a t o g r a p h y , and electrospray mass spectroscopy. A d d i t i o n a l m e t h o d s include: • ebulliometry, ultracentrifugation • s u m m a t i v e - f r a c t i o n a t i o n , light scattering • equilibrium sedimentation, thin f i l m dialysis 3 5 0 pages ( 1 9 7 3 ) Cloth, $ 1 7 . 5 0 . Postpaid in U.S. and Canada, plus 4 0 cents elsewhere.

CONCERNED WITH

Special Issues Sales American Chemical Society 1155 Sixteenth St., N.W. Washington, D.C. 2 0 0 3 6

VISCOSITY MEASUREMENT AND CONTROL FOR OVER 40 YEARS. BROOKFIELD ENGINEERING LABORATORIES INC. Dept. F4 ST0UGHT0N, MASS

02072

617/344-4310

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242 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY

1975