Mass Dimension One Fermion. Dharam Ahluwalia. 135 pp. Cambridge U. P., New York, 2019. Price: $140 (hardcover) ISBN 978-1-107-09409-3.

Non-Inertial Frames and Dirac Observables in Relativity. Luca Lusanna. 338 pp. Cambridge U. P., New York, 2019. Price: $155 (hardcover) ISBN 978-1-108-48082-6.

On the Life of Galileo: Viviani's Historical Account and Other Early Biographies. Stefano Gattie (ed.). 416 pp. Princeton U. P., Princeton, NJ, 2019. Price: $49.95 (hardcover) ISBN 978-0-691-17489-1.

What Science Is and How It Really Works. James C. Zimring. 405 pp. Cambridge U. P., New York, 2019. Price: $25.99 (paper) ISBN 978-1-108-70164-8.