Specifications for the microfilming of books and pamphlets in the Library of Congress. 

 - Washington ,  Library of Congress ;  1973. 
 - iii, 16 p. :   ill. ;   26 cm. 
<br/><br/>Bibliography: p. 16. 
<br/><br/><label>ISBN: </label>084440098X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microphotography--Specifications--United States.<br/>Micrographics--Library applications--Standards--United States.<br/>Books on microfilm--Standards--United States.