TY  - BOOK
AU  - Katzan, Harry
TI  - APL USER'S GUIDE
U1  - 001.6424 
PY  - 1971///
CY  - New York
PB  - Van Nostrand Reinhold
KW  - Apl (Computer Program Language)
N1  - Bibl. Ref. : P. 112
ER  -