"As with the other chapters in this volume, I enjoyed the writing style that has been adopted. I believe that it will appeal to the intended audience. Presenting technical material of this type in a non-technical manner is no easy task, and the author should be congratulated on the quality and consistency of the book as a whole." ~David Giles, University of Victoria"Reading the additional chapters was a pleasure, and the author is to be congratulated for the clarity of the writing and for maintaining a balanced presentation throughout all of the chapters. One aspect of the work that I find especially appealing is the extensive use of historical narrative. Given the intended audience, this is extremely helpful, and it definitely adds to the readability." ~William Nicholson, Cornell University