Science year :1981 :
Science year :1981 : the World book science annual.
World book annual science supplement World book science annual
- Chicago : Field Enterprises Educational Corporation, 1981.
- v. : ill. (some col.) ; 26 cm.
- Annual
- 1965-.
Published by: World Book-Childcraft International, 1979-1982; World Book, 1983-.
0716605821
Science--Periodicals.
Science--Periodicals.
Sciences--Périodiques.
Q9 / .S3
Published by: World Book-Childcraft International, 1979-1982; World Book, 1983-.
0716605821
Science--Periodicals.
Science--Periodicals.
Sciences--Périodiques.
Q9 / .S3