MONO91 Title Page title page Mary Elizabeth Stevens National Bureau of Standards UNITED STATES DEPARTMENT OF COMMERCE e Maurice H. Stans, Secretary NATIONAL BUREAU OF STANDARDS . Lewis M. Branscomb, Director Automatic Indexing: A State-of-the-Art Report Mary Elizabeth Stevens Center for Computer Sciences and Technology National Bureau of Standards Washington, D. C. 20234 o[OCRerr] * z $ £`[OCRerr][OCRerr]u o[OCRerr] National Bureau of Standards Monograph 91 Issued March 30, 1965 Reissued with Additions and Corrections (See Preface), February 1970 For sale by the Superintendent of Documents, U.S. Government Printing Office, Wasbington, D. C. 20402 (Order by SD Catalog No. C13.44:91), Price $2.25