TY  - BOOK
AU  - Riefler,Sigmund
ED  - YA Pamphlet Collection (Library of Congress)
TI  - Das Nickelstahl-Compensationspendel, D.R.P. no. 100870
PY  - 1902///
CY  - München
PB  - C. Wolf and Sohn
KW  - Pendulum
KW  - History
KW  - Clock (general)
KW  - Germany
KW  - Compensation pendulum Riefler nickel
KW  - Performance clock pendulum
KW  - Pendulum science
ER  -