To many, the contents of this conference may not seem appropriate at a time when the minds are preoccupied with a "population explosion." To the participants and guests of this conference, however, this was a week of fascinating discussions. While quantitative aspects of reproduc tion were touched upon, it was mostly a search for an understanding of the qualitative aspects of reproduction and its failure. Only when we understand these more completely will it be possible to render optimum care and have the foundations for meaningful population control. The conference was conceived in discussions at the Committee on Pathology of the National Academy of Sciences, W"ashington, in 1965. It was felt that investigators in medicine and the veterinary fields would profit greatly from a closer liaison. All too frequently, we work relatively isolated in our respective fields and, with the burgeoning information filling our journals, we have not enough time and leisure to stand back and attempt a comparative look at the subject of study. Often we are not familiar with the techniques other disciplines use, and which we could well employ to great advantage. ,,yhile this applies to many aspects of medicine, a comparative approach to the study of reproductive failure seemed most advantageous at this time.

Even as classic cytogenetics has given way to molecular karyotyping, and as new deletion and duplication syndromes are identified almost every day, the fundamental role of the genetics clinic remains mostly unchanged. Genetic counselors and medical geneticists explain the "unexplainable," helping families understand why abnormalities occur and whether they're likely to occur again. Chromosome Abnormalities and Genetic Counseling is the genetics professional's definitive guide to navigating both chromosome disorders and the clinical questions of the families they impact. Combining a primer on these disorders with the most current approach to their best clinical approaches, this classic text is more than just a reference; it is a guide to how to think about these disorders, even as our technical understanding of them continues to evolve. Completely updated and still infused with the warmth and voice that have made it essential reading for professionals across medical genetics, this edition of Chromosome Abnormalities and Genetic Counseling represents a leap forward in clinical understanding and communication. It is, as ever, essential reading for the field.

These four papers supplement the book Contraception and Reproduction: Health Consequences for Women and Children in the Developing World by bringing together data and analyses that would otherwise be difficult to obtain in a single source. The topics addressed are an analysis of the relationship between maternal mortality and changing reproductive patterns; the risks and benefits of contraception; the effects of changing reproductive patterns on infant health; and the psychosocial consequences to women of controlled fertility and contraceptive use.

These essays examine the global impact of infertility as a major reproductive health issue, one that has profoundly affected the lives of countless women and men. The contributors address a range of topics including how the deeply gendered nature of infertility sets the blame on women's shoulders.

Sexually transmitted diseases, unintended pregnancies, infertility, and other reproductive problems are a growing concern around the world, especially in developing countries. Reproductive Health in Developing Countries describes the magnitude of these problems and what is known about the effectiveness of interventions in the following areas: Infection-free sex. Immediate priorities for combating sexually transmitted and reproductive tract diseases are identified. Intended pregnancies and births. The panel reports on the state of family planning and ways to provide services. Healthy pregnancy and delivery. The book explores the myths and substantive socio-economic problems that underlie maternal deaths. Healthy sexuality. Such issues as sexual violence and the practice of female genital mutilation are discussed in terms of the cultural contexts in which they occur. Addressing the design and delivery of reproductive health services, this volume presents lessons learned from past programs and offers principles for deciding how to spend limited available funds. Reproductive Health in Developing Countries will be of special interest to policymakers, health care professionals, and researchers working on reproductive issues in the developing world.