The Special Theory of Relativity. By H. Muirhead. (Macmillan, 1973.) [Pp. ix + 163.] £3.95. Scope: Textbook. Level: Undergraduate. Handbook on. Nuclear Activation Cross-Sections. Technical Report No. 156. (International Atomic Energy Agency, Vienna, 1974.) [Pp. 558.] £10.80. Scope: Survey; library (reference. Level: For specialists only; specialist/postgraduate. Plasma Physics: Lectures from the Culharn Plasma Physk Summer Schools. Edited by B. A. Keen. (The Institute of Physics, 1974.) [Pp. vi+339.] £15.00. Scope: Survey. Level: Specialist/postgraduate. Scientific Technology and Social Change. (Readings from Scientific American) Edited by G. I. Rochlin. (W. H. Freeman: 1974.) [Pp. 403.] £6.30 cloth, £3.30 paper. Scope: Survey; Library. Level: General reader/Undergraduate/School. Introduction to the Theory of Space Charge Optics. By G. A. Nagy and h M. Szilagyi. (Macmillan, 1974.) [Pp. 514.] £11.00. Scope: Treatise. Level: Specialist/postgraduate. Action at a Distance in Physical and Cosmology. By F. Hoyle and J. V. Narlikar. (W. H. Freeman, 1974.) [Pp. x + 266.] £7.80. Scope: Treatise. Level: Specialist/postgraduate. Ondes et Radiatiolw Uravitatwnrdas. Ed. Yvonne Chouqet-Brwat. (Editions du Centre de la Recherche Scientifique, Paris, 1974.) [Pp. 392.] 120F. Scope: Conference Proceedings. Level: Specialist/postgaduate. Fundamentala of Cosmic Phyaie-9. A new Journal edited by A. G. W. Cameron. (Gordon and Breaoh, 1974.) [Pp. (No. 1) 165.] £19.00 per 4 issues (£5.50 for personal use.) The Einuteim Decade (1905-1915). ByC. Lanczos. (Paul Elek, 1974.) [Pp. xiv+230.] £4.80. Scope: Treatise; Survey; Library; Library (reference). Level: General reader; Specialistlpostgraduate; Undergraduate. Irreversible Thermodynamics and the Origin of Life. Edited by G. F. Oster, I. L. Silver and C.A.Tobias. (Gordon and Breach, 1975.) [Pp. 89.1 £3.90. Scope: Symposium Proceedings. Level: Specialist only. Crystal Physics. By H. J. Juretschke. (W. A. Benjamin, 1974.) [Pp. xvi + 220.1 Paper $12.50, Cloth $19.50. Scope: Textbook. Level: Post-graduate/undergraduate. Radio and Space Research January 1971 to December 1973. (Science Research Council, 1974.) [Pp. 83.] £1.25.