GERRING John Case study research Principles and practices - 2nd - United Kingdom Cambridge University Press 2017 - xxix,332p cm. Bibliography :P351-69 ISBN: 9781316632505 2177.88 Source: 1677, 21/09/2017, Pranami Book Service General Book Subjects--Topical Terms: Sociology Dewey Class. No.: Yb4y7, Q7