TY - BOOK AU - Green,Judith TI - Principles of social research : SN - 9780070636101 U1 - 300.72 PY - 2006/// CY - New Dehli PB - Tata McGraw Hiil Publishing Company KW - Education-Research N1 - 1. Introduction 2. Qualitative methods 3. Quantitative methods 4. Social since disciplines in public health ER -