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Published online by Cambridge University Press: 24 August 2009
* On learning of this event we asked the President of Negative Population Growth, Inc., Donald Mann, for a comment and he replied (in litt. 24 March 1986) that he did not feel qualified to give an opinion on what he referred to as ‘a most interesting and promising development, indeed’, but added: ‘Our viewpoint is that while improved contraceptives are essential, the heart of the matter [lies in] motivating couples to have not more than one child or two children at the most’—see also the Guest Comment by Professor Gordon L. Ada on page 100 of this issue.—Ed.