The Free On-line Dictionary of Computing (30 December 2018):

Sharp APL
Dictionary APL

    (Or "Dictionary APL")

   ["A Dictionary of the APL Language", K. Iverson, Pub 0402,
   Sharp Assocs, Toronto, 1985].

   (ftp://watserv1.waterloo.edu/languages/apl/sharp.apl).

   (1997-09-02)