1. Polar Motion: Historical and Scientific Problems
by Dick, Steven; McCarthy, Dennis; Luzum, Brian 
Price: USD 45.00
Dealer: Alibris, Book Dispensary via Alibris
Description: San Francisco, CA, U.S. A Astronomical Society of the Pacific 2000 Unabridged. Hard Cover Very Good Ex-Library Ex-lib w/usual markings, AS NEW hardcover, no marks in text; an exceptionally clean copy. 

2. Polar Motion: Historical and Scientific Problems
by Dick, Steven; McCarthy, Dennis; Luzum, Brian 
Price: USD 45.00
Dealer: Abebooks, Book Dispensary
Description: ISBN10: 1583810390, ISBN13: 9781583810392, [publisher: Astronomical Society of the Pacific, San Francisco, CA, U.S.A] Hardcover ex-lib w/usual markings, AS NEW hardcover, no marks in text; an exceptionally clean copy [Concord, ON, Canada] [Publication Year: 2000]