TY  - BOOK
TI  - Encyclopaedia britannica
PY  - 1969///-1972
CY  - London
PB  - Encyclopaedia Británica
KW  - Enciclopedia
N1  - Comprende: 23 v. + 1 v. index and atlas + Book of the year 1970, 1972 + Yearbook of science and the future 1972
ER  -