New library books

Aerospace Telemetry, H. L. Stiltz (editor). Prentice-Hall, Inc., Englewood Cliffs, N. J., 1961; 505 pages, 6¼ by 9¼ inches, bound; $15.00. Intended for engineers in the telemetry field and for advanced electrical engineering students, this volume is comprised of separate chapters by various authorities, on the latest techniques covered in the Inter Range Instrumentation Group Telemetry Standards: pulse code modulation, data sampling, predetection recording, and high-speed PAM/FM. IRIG Standards are given as an appendix.