Ayer directory :  Newspapers, magazines, and trade publications / 
 1971 Ayer directory 
Publishers : William J. Luedke, Leonard Bray. 
 - Philadelphia :  Ayer Press,. 
 - volume 
 - Annual 
<br/><br/> 1971. (103rd Annual Edition, 1971, xii, 1638 p., 60 p. maps) 
<br/><br/><label>ISSN: </label>0067-2696 
<br/><br/><label>Subjects--Topical Terms: </label><br/>American newspapers--Directories.<br/>American periodicals--Directories.<br/>Canadian newspapers--Directories.<br/>Canadian periodicals--Directories.<br/>Newspapers--United States--Directories.<br/>Periodicals--United States--Directories.<br/>Newspapers--Canada--Directories.<br/>Periodicals--Canada--Directories.