Viruses are disarmingly small and simple. None the less, the smallpox virus killed over 300 million people in the 20th century prior to its eradication in 1980. The AIDS virus, HIV, is now the single most common cause of death in Africa. In recent years, the outbreaks of several lethal viruses such as Ebola and hanta virus have caused great public concern. In her fascinating an...(展开全部)

In this masterpiece of nature writing, Nan Shepherd describes her journeys into the Cairngorm mountains of Scotland. There she encounters a world that can be breathtakingly beautiful at times and shockingly harsh at others. Her intense, poetic prose explores and records the rocks, rivers, creatures and hidden aspects of this remarkable landscape. Shepherd spent a lifetime in se...(展开全部)

In this masterpiece of nature writing, Nan Shepherd describes her journeys into the Cairngorm mountains of Scotland. There she encounters a world that can be breathtakingly beautiful at times and shockingly harsh at others. Her intense, poetic prose explores and records the rocks, rivers, creatures and hidden aspects of this remarkable landscape. Shepherd spent a lifetime in se...(展开全部)

马库斯·沃尔夫（德语：Markus Johannes "Mischa" Wolf、1923年1月19日－2006年11月9日）是德意志民主共和国国家安全部（简称史塔西）对外情报局（Hauptverwaltung Aufklärung）局长。沃尔夫在史塔西是仅次于国家安全部部长的第二号人物，他在史塔西服务34年，其中有26年的时间，西方情报单位完全没有沃尔夫的档案照，仅知他的代号“米夏（Mischa）”，因此得到“没有脸的人”的称号。沃尔夫的神秘难以捉摸成为后世许多小说的题材。许多专家认为他是冷战期间最有影响力的特务首脑之一。

The distinction between the a priori and the a posteriori is an old and influential one. But both the distinction itself and the crucial notion of a priori knowledge face powerful philosophical challenges. Many philosophers worry that accepting the a priori is tantamount to accepting epistemic magic. In contrast, this Element argues that the a priori can be formulated clearly, ...(展开全部)

戴维·费尔德曼是美国反向并购、自我申报和其他新型上市的专家。他是拥有23名律师的纽约费尔德曼·温斯坦&史密斯律师所的创始合伙人。该所处理过包含反向并购在内的数百起的上市案例。作为一名证券律师，他经常发表公开演讲，主持研讨，并就反向并购相关事务提供咨询。他在1982年获取蚌州大学沃顿商学院学士学位，并于1985年获取宾州大学法学院法学博士学位。戴维·费尔德曼是沃顿全球校友会的名誉主席。

This paperback edition of George Rosen's classic account of the history of public health supplements the original text with Elizabeth Fee's introduction and Edward T. Morman's biographical essay and bibliography.

In this funny and provocative collection of behind-the-scenes tales from the life of a successful public speaker, bestselling business author Scott Berkun offers a unique insider's take on what public speakers do, how they do it, and how anyone can do it well. "Confessions of a Public Speaker" is an entertaining romp through the embarrassments and triumphs Berkun has experience...(展开全部)