W. Cochran: Sampling techniques. Wiley 1977. A. Davison/D. Hinkley: Bootstrap methods and their applications. Cambridge UP 1997, 590p. $38. Bradley Efron/Robert Tibshirani: An introduction to the bootstrap. Chapman and Hall 1993, 460p. $75. R. Hambleton/H. Swaminathan/H. Rogers: Fundamentals of Item Response Theory. Sage Publishers, Newbury Park 1991. 13211 Brooks Hanson/Floyd Bloom: Stop censuring the Census. Science 7 April 2000, 53. The authors think one should not remove criminal penalties for failure to answer all questions of the U.S. Census.