Determining wheather the contents of a data file are sufficent to fill a retrieval request
By: [by] Christopher R. Sprague.
Series: Massachusetts Institute of Technology. Alfred P. Sloan School of Management. Working papers -- 449-70; Working paper (Sloan School of Management) -- 449-70.
Publisher: M.I.T.]
Published: 1970
Place of publication: [Cambridge, Mass
Language: eng
Subjects: Database management.; Data libraries -- Mathematical models.