TY  - BOOK
ED  - Smithsonian Institution.
TI  - What everyone should know about Foucault pendulums and how they prove the earth rotates
T2  - A scriptographic presentation
PY  - 1959///
CY  - Greenfield, Mass.
PB  - C.L. Bete
KW  - Foucault's pendulum
KW  - Pendulum
KW  - Earth (Planet)
KW  - Rotation
KW  - PendulumScience
KW  - Not Geographic
KW  - Foucault
KW  - education
KW  - Smithsonian
KW  - Timekeeper (general)
N1  - Cover title; "Smithsonian Institution."--Cover
ER  -