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Market Segmentation. By R. E. Frank, W. F. Massey and Y. Wind. Englewood Cliffs, N.J., Prentice‐Hall, 1972. xii, 292 p. 914″.£6.

Statistical Theory of Sample Survey Design and Analysis. By H. S. Konijn. Amsterdam and London, North‐Holland 1973. xv, 429 p. 23·5 cm. $34·60.