1987 economic censuses [computer file]. 

 - Washington  Bureau of the Census  1990- 
 - computer laser optical disks  12 cm. 
<br/><br/> Disk Characteristics: CD-ROM 
<br/><br/><label>LCCN: </label>doc92000542  
<br/><br/><label>Subjects--Topical Terms: </label><br/>CD-ROM Fed. Doc.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Economic conditions--Databases.