Microtexts and microrecording : the papers and discussion of a symposium held at Hatfield Technical College on the 14th January, 1958    (Book) 

 - Hatfield  Hertfordshire County Council Technical Library Service  1958 
 - 27 p.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microfilms Microphotography
<br/><br/><label>Universal Decimal Class. No.: </label>778.14.02 HER  / 5287