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"This book is very complete and very interesting for those interesting in the study policies about the use of the space. The book brings a lot of specialists where they present their ideas and speculation how the space shall be organized and explored for the good of humankind. I really reccommend this book if you are interested in this kind of political questions. ... This book is a classical and I reccommend it for your personal library." (Philosophy, Religion and Science Book Reviews, bookinspections.wordpress.com, November, 2013)