Czaja, Ron Designing surveys : a guide to decisions and procedures / Ronald Czaja and Johnny Blair - Thousand Oaks, Calif. : Pine Forge Press, 1996 - 269 p. : ill. ; 23 cm. Bibliography: p. 259-263 ISBN: 0803990561 RM84.29 Subjects--Topical Terms: SurveysSampling (Statistics)