TY - CPAPER AU - Roy Garstang CY - Flagstaff, Arizona N1 - JILA Pub. 3359 PB - Lowell Observatory PP - Flagstaff, Arizona PY - 1987 SN - ISBN-10: 0961828803 ISBN-13: 978-0961828806 TI - Modelling manmade night-sky illumination ER -