TY  - BOOK
ED  - Encyclopaedia Britannica Inc.
ED  - Encyclopaedia Britannica Inc.
TI  - 1981 yearbook of science and the future
SN  - 0852293771
AV  - Q9 .B78 1981
PY  - 1981///
CY  - Chicago
PB  - Encyclopaedia Britannica Inc.
KW  - Science
KW  - Earth
N1  - includes index
ER  -