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991.
The Hon. Editor has received the following letter commenting on Professor Kirk's and Mr. Sloyan's article on the New Covent Garden Market (Vol. 56 Spring 1978). The author is lecturer in applied economics in the Department of Social and Economic Research, University of Glasgow. Mr. Heald's letter is followed by a reply by Professor Kirk on behalf of Mr. Sloyan and himself.  相似文献   
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In 1973 the United States Supreme Court ruled that abortion could be had practically on request during the first 3 months of pregnancy. This article discusses whether the decision led to more public support for that position, and where in the U.S. the increase in support has been most drastic. The most recent public opinion polls indicate about 60% public support legalized abortion, while it was only 45% before 1973. Support has also increased even if pregnancy is not judged to be detrimental to the mother's health, or if it is not the result of rape and/or incest, but even if it is simply requested for economic or purely personal reasons. People under 30, with college education, men and Protestants, seem to be the staunchest supporters of abortion on demand. There has also been an increase in the number of Catholics supporting abortion. Support for abortion increased in most states between 1969-1973, particularly in the West and in the Northwest. The fight to deny federal funds for abortion is still raging in Congress; some studies indicate that the religion of the legislators is the most powerful predictor of voting on abortion, and that the decision is a very personal one, and not easily altered by the lobbying of groups on either side.  相似文献   
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The results of a study of the polymorphism of the sixth component of human complement by means of isoelectric focusing in polyacrylamide gels with subsequent C-dependent lysis in an agarose overlay containing C6 deficient rabbit serum are reported. The allele frequencies obtained (C6A = 0.613, C6B = 0.379, C6R = 0.008) are in good agreement with those previously published. The mode of inheritance in 47 families with 173 offspring as well as 26 mother-child combinations is in agreement with a formal genetical model: "C6A, C6B, C6A1 and C6B1 at an autosomal locus". The inclusion of this system into a blood group expertise in Germany can be recommended.  相似文献   
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The paper shows that if the class of admissible preference orderings is restricted in a manner appropriate for economic and political models, then Arrow's impossibility theorem for social welfare functions continues to be valid. Specifically if the space of alternatives is R + n , n ≥ 3, where each dimension represents a different public good and if each person's preferences are restricted to be convex, continuous, and strictly monotonic, then no social welfare function exists that satisfies unanimity, independence of irrelevant alternatives, and nondictatorship.  相似文献   
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