Gilbert, Leslie A. <br/><br/>
Non-book materials ; their bibliographic control :  a proposed computer system for the cataloguing of audio-visual materials in the United Kingdoms / 
Leslie A. Gilbert, Jan W. Wright. 
 - London :  National Council for Educational Technology,  1971. 
 - 83 p. ;  22 cm. 
 - Working paper ;  No. 6 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cataloging of nonbook materials.<br/>Machine-readable bibliographic data.