1. BOOK REVIEWS: BEN KLEMENS, MODELING WITH DATA. TOOLS AND TECHNIQUES FOR SCIENTIFIC COMPUTING, PRINCETON UNIVERSITY PRESS, PRINCETON AND OXFORD, 2009, XIV+454 PP; ISBN: 978-0-691-13414-0. Authors: RADU TRÂMBIŢAŞ.2. BOOK REVIEWS: ANNE GREENBAUM AND TIMOTHY P. CHARTIER, NUMERICAL METHODS. DESIGN, ANALYSIS, AND COMPUTER IMPLEMENTATION OF ALGORITHMS, PRINCETON UNIVERSITY PRESS, 2012, 470 PP.; ISBN: 978-0-691-15122-9. Authors: RADU TRÂMBIŢAŞ.3. BOOK REVIEWS: LANCE FORTNOW, THE GOLDEN TICKET: P, NP, AND THE SEARCH FOR THE IMPOSSIBLE, PRINCETON UNIVERSITY PRESS, 2013, ISBN 978-0-691-15649-1. Authors: RADU TRÂMBIŢAŞ.4. BOOK REVIEW: ARTHUR BENJAMIN, GARY CHARTRAND AND PING ZHANG, THE FASCINATING WORLD OF GRAPH THEORY, PRINCETON UNIVERSITY PRESS, PRINCETON NJ, 2015, XII+322 P., ISBN 978-0-691-16381-9/HBK; 978-1-4008-5200-0/EBOOK). Authors: RADU TRÂMBIŢAŞ.