This monograph is essentially the outcome of corporate endeavour on the part of members of the Committee on Public Education of the International Union against Cancer, from the decision taken in September 1963, via a lengthy and arduous rework ing of the first draft in Philadelphia in 1964 to its final editorial meeting in September 1965. In between there has been a continuous exchange of ideas, suggestions, advice and material for inclusion. Nevertheless, as chairman I should be remiss if I did not acknowledge the Committee's indebtedness to Mr. MICHAEL S. GOOD STADT, formerly of the...