Chicago
World Book
1993
anuar enciclopedic
050.8:61(73)"1993"
0716611937
1996
ştiinţă
050.8:001.9(100)"1997"
071660597X
1991
răspândirea cunoştinţelor
050.8:001.9(100)"1992"
0716605929
1990
050.8:001.9(100)"1991"
0716605910
1989
050.8:001.9(100)"1990"
0716605902
[Paris]
Hachette
1992
istoria lumii
082.1L'Aventure du XX-e siecle
București
Editura ştiinţifică şi enciclopedică
050.8"1988"
1988
327(100)"1987"
1985
058"1985"
1983
058"1983"
editor in chief W. Richard Dell
1997
0716667975
Cicago
editor in chief: Robert O. Zeleny
0716604914
050.8:001.9(100)"1989"
0716604906