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Features theexperimentalapproach
A basic andnon-technicalpresentation
How tousethe soil
IncludesSelberg'selementary proof
Incorporatesrecentsignificantadvances
Presentscontroltechniques
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PHYSICAL BIOCHEMISTRYSecond Edition, by HENRY B. BULL, Northwestern University Medical School.This new edition features a "relentless emphasis upon the interrelationship of thephysical and the biological sciences and upon the value of a thorough understand-ing of purely physical phenomena in studying and interpreting biological systems."It includes latest information on modern methods and equipment. 1951. 355 pages.$5.75.
THE FORMATION OF MINERAL DEPOSITSBy ALAN M. BATEMAN, Yale University. This is the first book to present a co-ordinated and integrated treatment of the origin of all mineral deposits-in simplelanguage. Fundamental information is offered on the various means by whichdeposits that yield our mineral wealth have been formed and how they occur. Abrief glossary explains technical terminology. 1951. 371 pages. $S.S0.
FUNDAMENTALS OF SOIL SCIENCESecond Edition, by C. E. MILLAR and L. M. TURK, both at Michigan State College.In this clear, well-organized presentation, the authors integrate new conceptswith the basic problem-how to use the soil to best advantage. New features in-clude a timely chapter on Soil Conservation and colored illustrations dealing withnutrient-deficiency symptoms. 1951. 510 pages. $5.50.
INTRODUCTION TO NUMBER THEORYBy TRYGVE NAGELL, University of Uppsala. Offers a brief introduction to themost important results in the elementary theory of numbers. Many results andmethods never previously published in book form are included; among them isAtle Selberg's elementary proof of the prime number theorem. 1951. 309 pages.$5.00.
FORESTRY IN FARM MANAGEMENTSecond Edition Revised by R. H. WESTVELD, University of Missouri. New research,new techniques, new developments, and new trends have revitalized this edition ofa very successful book. It covers all phases of farm forestry and is applicable to allsections of the United States. Up-to-date information is given on power saws andtree planting machines; preservatives; shearing techniques; cutting, logging, soilpreparation and slash disposal. 1951. 340 pages. $S.OO.
ELEMENTS OF PLANT PROTECTIONBy Louis PYENSON, Long Island A d T Institute. Brings together vital informa-tion on such plant pests as insects, rodents, birds, weeds, etc. Stressing the "knowwhy" as well as the "know how" of this subject, this book fully covers plant pro-tection from the standpoint of organisms, chemicals, practices, equipment, andprinciples. 1951. 536 pages. $4.96.
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August 31, 1951
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SIX-MEMBERED HETEROCYCLIC NITROGEN COMPOUNDSWITH FOUR CONDENSED RINGSBy C. F. H. ALLEN, Eastman Kodak Company, Rochester, N. Y. 1951. 358pages, 7 illus., 40 tables. $10.00. Special price to subscribers, $9.00This is the second monograph in the series, "The Chemistry of HeterocyclicCompounds", edited by Arnold Weissberger.This series will be complete in approximately thirty volumes.
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Volume 7: FURNACES to IOLITEVolumes appear at 7 month intervals. Each volume approximately 960 pages.7 3/8 x10 3/8. With numerous illustrations and tables. Subscription price$25.00 per volume.
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THE CHEMISTRY AND TECHNOLOGY OF FOOD AND FOODPRODUCTSSecond completely revised and augmented edition in three volumes.Edited by MORRIS B. JACOBS, Adjunct Professor of Chemical Engineering,Polytechnic Institute of Brooklyn, New York.Volume I: 1951. 6 x 9. 858 pages, 78 illus., 110 tables. $12.00Volume II: 1951. 6 x 9. 964 pages, 54 illus., 397 tables. $15.00Volume III: In active preparation.
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DENTAL CARIES and FLUORINE-71/2 x 1OY2, clothbound, double column, Xl + 11 1 pages
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Francis A. Amold, Jr. and Non-Fluoride AreasWallace D. Armstrong Chemical Differences of Caries Susceptible and Immune Teeth
ancd a Consideration of Food Sources of FluorineHarold C. Hodge and Experimental Caries and a Discusion of the Mechanism of Caries
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Dental CariesFrancis A. Arnold, Jr. The Possibility of Reducing Dental Caries by Increasing Fluoride
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8SCINCB, VOL. 11418
Recent additions to Tracerlab's growing list of radiochemicals are
given below. Other compounds are available from stock or will besynthesized upon request.
1. Glycine-1 and 2-C-142. dl-Alanine-l-C-143. dl-Phenylalanine-2- and 3-C-144. dI-Methionine-2-C-145. dI-Tryptophan-2-C-1 46. dl-Lysine-2-C-147. dl-Tyrosine-2-C-148. Succinic Acid-2-C-14
9. Pyruvamide-2-C-14
10. Palmitic Acid-1-C-14
11. Acetylcholine Bromide(Trimethyl-2-acetoxy-ethyl-1 ,2-C14_ammonium bromide)
12. Choline Bromide
13. Diethyl Malonate-2-C-14
For further information write for Bulletin S-3 1.
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