Spencer, Michael D. G. <br/><br/>
Free publications from U.S. government agencies :   a guide / 
Michael D. G. Spencer 
 - Englewood, Colo. :  Libraries Unlimited Inc.  1989 
 - ix, 123 p. ; 25 cm. 
<br/><br/> Includes index. Bibliography: p. 107-119 
<br/><br/><label>ISBN: </label>0872876225 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devicies--Catalogs<br/>Government publications--United States--Bibliography<br/>Acquisition of government publications