I have several books of this collection "knowledge of work", which I find very well to enter a work; However I was disappointed with this book about Spirits. The summary is the foreword are poorly printed, letters overlap. Some misspellings punctuate the thing. Furthermore, the authors (who care to mention more than measure bibliography) are not always very precise, and go up exaggerate certain realities (no, Calligrammes is not a work of glorifying the excessively war, not everything is presented in a wonderful way.) Aware of these inaccurate details, I wonder what credit should be given to the study of Alcohols in this collection. I, however, that all the books in the collection that I've read, it is currently the only one I would question.