Guide to government data :  a survey of unpublished social science material in Libraries of Government Departments in London / 
by A. F. Comfort and C. Loveless ; introduced by D. A. Clarke 
 - London :  MacMillan,  1974 
 - 404 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0333171292 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Bibliography