x  x <br/><br/>
Scientific productivity  The effectiveness of research groups in six conntries 

 - x 
 - Cambridge  Cambridge Univ.  1979 
 - xxxiv, 469 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science - Study and Teaching Nature Study 
<br/><br/><label>Dewey Class. No.: </label>507/ANS