TY - CPAPER AU - J. Wahr AU - D. Larden CY - New York City N1 - JILA Pub. 2323 PB - Lubrecht \& Cramer Limited PP - New York City PY - 1983 SN - 3510651138, 9783510651139 TI - An Analysis of Lunar Laser Ranging Data for the Earth\textquoterights Free Core Nutation ER -