Ramsden, Michael J . An introduction to index language construction : a programmed text / Michael J Ramsden. - London : Clive Bingley , 1974. - 206 p : diag. ; 22 cm . NULL ISBN: 0851571522 UKP 3.25 Subjects--Index Terms: INDEXING LANGUAGE Dewey Class. No.: 025.48 / RAM/A