TY - BOOK AU - Yin,Robert K. TI - Case study research: design and methods T2 - Applied social research methods v. 5 SN - 9781412960991 AV - H62 .Y56 2009 U1 - 300.722 PY - 2009/// CY - New Delhi PB - Sage KW - Case method KW - Social sciences KW - Research ER -