Medical surveys and clinial trials:  some methods and applications of group research in medicine/ 
edited by L.J. Witts 
 - 2nd ed. 
 - London:  Oxford Univeristy Press,  c1964 
 - xi, 367 p.;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicine--Research<br/>Operations research<br/>Group work in research
<br/><br/><label>Dewey Class. No.: </label>619