Spencer, John R.,  1946- <br/><br/>
An appraisal of computer output microfilm for library catalogues  the final report on the findings and work of an investigation from December 1971 to July 1973, grant aided by the Office for Scientific and Technical Information 
by John R. Spencer 
 - Hertfordshire  National Reprographic Centre for Documentation  1974 
 - 168 p. : ill. ; 30 cm. 
<br/><br/><label>ISBN: </label>185267063X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library catalogs on microfilm<br/>Computer output microfilm devices