Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ
îðèãèíàëüíîãî äîêóìåíòà
: http://www.astronomy.com/magazine/ask-astro/2012/05/under-light-polluted-skies
Äàòà èçìåíåíèÿ: Unknown Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 11:53:50 2016 Êîäèðîâêà: ISO8859-5 Ïîèñêîâûå ñëîâà: earth's atmosphere |