Galvin, Thomas J <br/><br/>
Problems in reference service  case studies in method and policy 
Thomas J. Calvin Foreword by Francis Neel Cheney 
 - New York:   R. R. Bowker,   1965. 
 - xix, 177 pages ;    24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries)--Case studies<br/>Library science--Case studies