TY  - BOOK
AU  - Polivka,Raymond P.
AU  - Pakin,Sandra
TI  - APL: the language and its usage 
AV  - QA76.73 A27 P64
PY  - 1975///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - APL (Computer program language)
ER  -