Cluj- Napoca
Dacia
1994
973350520X
Levine, John R.
București
Teora
1996
9736012743
Leach, Lames A.
USA
Irwin Mc Gram-Hill
1995
256182965
Dima, Gabriel
Bucuresti
1993
9736011178
Bucureşti
Gookin, Dan
9736014010