TY - BOOK AU - Hill,MaryAnn ED - SPSS Inc. TI - SPSS missing value analysis 7.5 SN - 1568271654 PY - 1997/// CY - Chicago PB - SPSS Inc. KW - Social sciences KW - Statistical methods KW - Computer programs N1 - Includes bibliographical references [p. 77] and indexes UR - http://www.spss.com ER -