International Dark-Sky Association Information Sheets. Tucson, Ariz.: International Dark-Sky Association, 1988-.
International Dark-Sky Association Information Sheets. Tucson, Ariz.: International Dark-Sky Association, 1988-.
license
identifier
2000020891
created
2001-07-26T22:18:04
license
modified
2007-03-03T09:50:59
2007-09-05T10:59:34
title
International Dark-Sky Associa ...... l Dark-Sky Association, 1988-.
shortTitle
International Dark-Sky Association Information Sheets (1988-)