542 CHAPTER 38 1959 Guide Refrigeration 543: With the ideal Carnot cycle operating as a heat pump, the co efficient of performance is <cp)-^r~r O) The Carnot cycle coefficient of performance for both a re frigerating machine and a heat pump increases as the spread between the evaporator and the condenser temperatures de creases.

696 CHAPTER 51 1959 Guide pinging on the exposed worker.

Industrial Hygiene PlgeBt - 10 January, 1950 !

36 Metals Industry served solely lor engineers, rather, we do mean that people engaged in safety work most be able ro analyze, to judge; and to Mr.

19 TV * i 1C ri ir i v i iX <1 e c e y it e d c v e u V 5 > * | li n j !

SCF-ALLF-01397 Other Volumes in this Series Users of this volume will find much value in its companion volumes.

68 It is apparent from the table that the lung cancer death rate for the eight counties Immediately surrounding the asbestosproduciag areas is practically identical with that of eight counties selected for comparison.

BUILDING CONSTRUCTION AND MAINTENANCE bon disulfide, and ethyl ether.

Canfield, Bertrand R Publtc Relations Principles, Cases, and Problems, 3rd ed Homewood, III, Richard D Irwin, Inc, I960 Center, Allen H , editor Public Relations Ideas in Action New York, McGraw-Hill Book Co , 1957 CurTan, Charles Handbook of TV and Radio Technique New York, Pelhgnni & Cudahy, 1953 Flesch, Rudolph The Art of Plain Talk New York, Harper & Brothers, 1946 Flesch, Rudolph, and Lass, A H A New Guide to Better Writing New York, Popular Library, 1963 Klapper, Joseph T The Effects ofMass Communication New York City, The Free Press, 1960 Lee, Irving J How To Make the Safety Speech Chicago, National Safety Council, 1939 Lesly, Phillip, editor Public Relations Handbook Englewood Clifls, N J , Prentice-Hall, Inc , 1962 Linton, Calvin D Effective Revenue Writing--2 (Training No 129, Rev 7-62) Washington, D C , U S Government Printing Office, 1962 Lutz, Tom, and McElroy, Frank E Two Looks at Safety Today and Tomorrow (NSNEWS Re print No 36) Chicago, National Safety Council, 1968 McElroy, Frank E Four Steps to Easter Writing (NSNEWS Repnnt No 4) Chicago, National Safety Council, 1966 National Safety Council, 425 N Michigan Ave , Chicago, 111 60611 Photography for the Safety Professional, Data Sheet 619 Newcomb, R , and Sammons, M Employee Communications in Action New York, Harper & Brothers, Publishers, Inc, 1961 Packard, Vance The Hidden Persuaders New York City, Pocket Books, Inc , 1958 Schutte, William M , and Steinberg, Erwin R Communication in Business and Industry New York, Holt, Rinehart and Winston, Inc , 1960 Stephenson, Howard Handbook of Public Relations New York, McGraw-Hill Book Co , 1960 Style Manual Washington, DC, US Government Printing Office, 1967 Turabian, Kate L A Manual for Writers, 3rd ed Chicago, The University of Chicago Press, 1967

580 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE characteristic of sarcoidosis.

FERRIS ET AL.

first LCA case observed in Italy was published in 1955 (Rombola).

i ,%j;V -rr.r-.*... - s-. / 01 .21 " Table 3 presents the year-by-yoar orpertenco ef the cohort tad Indicates the aumbsr of deaths each year from specified causes.

Pun 36 KEIJI YADA Table 1~ Distribution of concentric and spiral structures In the circvntferentia!

iLung Cancer In cases per year/10,000 living persons KEY: 1) expectancy among total population; 2) age classification, 50-79 years old; 3) mortality among German asbestos workers, 20 deaths over a period of 20 years; 4) around 4000 asbestos workers; 5) among 500 autopsied cases of asbestosis.