TY  - BOOK
AU  - Bragg W L
AU  - Porter George
ED  - Royal Institution Library of Science
TI  - Physical sciences
U1  - 504 
PY  - 1970///
CY  - Essex
PB  - Elsevier Pub.
KW  - Physical science
N1  - The Friday evening discourses in physical sciences held at the Royal Institution, 1851-1939
ER  -