TY  - BOOK
AU  - Young, Richard G., ed.
TI  - 1969 Britannica yearbook of science and the future
U1  - R 505 21st ed.
PY  - 1968///
CY  - Chicago
PB  - Encyclopaedia Britannica
KW  - Science
KW  - Serial publications
KW  - Yearbooks
N1  - Index: pp 437-47
ER  -