Copyrights:   Citations from the NTIS data base 
/ National Technical Information Service, Springfield, May 1964 
 - Springfield:   National Technical Information Service,   1980 
 - 121p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Copyright 
<br/><br/><label>Universal Decimal Class. No.: </label>D 347.78:681.3.022  / M0