01009nam a2200157 i 4500008004100000040000800041082001300049100000900062245001400071250001900085260004400104300003100148500002000179520062900199650002300828240120s        xx            001 0 und d  aGCL  a613bBYR10aByrd10aHealth  /  aThird edition.  bW.B. Saunders Company,aLondon :c1961.  a421 pages :bhbk.c25  cm.  aIncludes index.  afrom Preface Many changes, starting with Health as a new title, have been made in this revision of the Textbook of College Hygiene These changes have been brought about by new research and new facts in the field of health, by further studies of the health problems and interests of college students and by suggestions for modifications by college and university teacher who have adopted previous editions of the textbook for their classes Seven new chapters have been added, with the following titles Reasons for Health, Stress and Tension, Physical Fitness, Safety in Sport, Malaria, Radiation and Health, and Civil Defense  aPhysical Education