Olsen, Wendy. <br/><br/>Data collection/ Wendy Olsen.  -- Los Angeles:  Sage Publication.,  2012. <br/>xi, 234 p.:  ill.;  24 cm. <br/><br/> Includes bibliographical references and indexes. <br/><br/><label>ISBN: </label>9781847872555 <br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences - research- methodology.<br/><br/><label>Dewey Class. No.: </label>RES 300.72 O47 2012