Bogdan, Robert, Qualitative research for education : an introduction to theory and methods / Robert C. Bogdan, Sari Knopp Biklen. - second edition. - Boston : Allyn and Bacon, (c)1992. - x, 262 pages : illustrations ; 24 cm. LCCN: 91000719 Subjects--Topical Terms: Education--Research. LC Class. No.: LB1028 / .Q355 1992 LB1028