Sampling methods for applied research : text and cases / Peter Tryfos. Tryfos, Peter. Sampling (Statistics) QA276.6 .T78 1996 519.52 TRS 20 Includes bibliographical references and index. System requirements for accompanying computer disk: DOS. New York : J. Wiley, c1996. c1996. 1996 Text xi, 440 p. : http://www.loc.gov/catdir/bios/wiley041/95035575.html http://www.loc.gov/catdir/description/wiley031/95035575.html http://www.loc.gov/catdir/toc/onix02/95035575.html eng System requirements for accompanying computer disk: DOS.