Book reviewed in this articleMacro‐economic Theory, a Mathematical Treatment. By K. G. D. Allen.Britain's Economic Prospects. By RichardE. Cavesand Associates.The Economics of Money. By A. C. L. Day.Public Policies and Private Investment. By John F. Helliwell.Economics and Economic Policy in Britain 1946‐1966. By T. W. Hutchison.The Structure of Earnings. By H. F. Lydall.National Accounts Statistics: Sources and Methods. Edited by RitaMaurice.An Introduction to the Theory of Finance. By BasilJ. MoorePublic Sector Economics. Edited by A. R. Prest.The Theory of Economic Development. By LordRobbins.The Crisis of Indian Planning : Economic Policy in the 1960's. Edited by PaulStreetenand MichaelLipton.Analytical Techniques for Development Planning.An Introduction to Econometrics. By A. A. Walters.Essays in Money and Banking in Honour of R. S. Sayers. Edited by C. R. Whittleseyand J. S. G. Wil