Science year 1992. : The World Book annual science supplement. A review of science and technology during the 1991 school year.
Science year 1990. : The World Book annual science supplement. A review of science and technology during the 1989 school year.
Science year 1996. : The World Book annual science supplement. A review of science and technology during the 1995 school year.
Science year 1995. : The World Book annual science supplement.
Science year 1991. : The World Book annual. Science supplement.
The 1993 World Book year book. : The annual supplement to The World Book encyclopedia. A review of the events of 1992.
The 1993 World Book. Year Book. : The annual supplement to the World Book encyclopedia. /
1993. Yearbook of science and the future /
Science year 1992. The World Book annual science supplement. A review of
Science annual 1994. /
World topics year book 1993. : A review of the events of 1992. /
Science year 1990. The World Book annual science supplement. A review of
Britannica. Book of the year 1993. /
The 1994 World Book year book. : The annual supplement to The World Book encyclopedia.
The 1989 World Book year book. : The annual supplement to The World Book encyclopedia. A review of the events of 1988.
The 1990 World Book year book. : The annual supplement to The World Book encyclopedia. A review of the events of 1990.
The 1991 World Book year book. : The annual supplement to The World Book encyclopedia. A review of the events of 1990.
The 1996 World Book year book. : The annual supplement to The World Book encyclopedia. A review of the events of 1995.
Yearbook of science and the future 1996.
The Hammond Barnhart dictionary of science. /