TY  - BOOK
AU  - Chorafas,Dimitris N.
TI  - Fourth and fifth generation programming languages: wich Unix, AT&T, IBM, and other standard bearers  
SN  - 0071001662
PY  - 1987///
CY  - New York
PB  - McGraw-Hill Book
KW  - LENGUAJES DE PROGRAMACION
KW  - LEMB
ER  -